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+The Project Gutenberg EBook of Geographic Variation in the Pocket Gopher,
+Cratogeomys castanops, in Coahuila Mexico, by Robert J. Russell and Rollin H. Baker
+
+This eBook is for the use of anyone anywhere at no cost and with
+almost no restrictions whatsoever. You may copy it, give it away or
+re-use it under the terms of the Project Gutenberg License included
+with this eBook or online at www.gutenberg.org
+
+
+Title: Geographic Variation in the Pocket Gopher, Cratogeomys castanops, in Coahuila Mexico
+
+Author: Robert J. Russell
+ Rollin H. Baker
+
+Release Date: May 31, 2010 [EBook #32623]
+
+Language: English
+
+Character set encoding: ASCII
+
+*** START OF THIS PROJECT GUTENBERG EBOOK POCKET GOPHER ***
+
+
+
+
+Produced by Chris Curnow, Tom Cos, Joseph Cooper and the
+Online Distributed Proofreading Team at http://www.pgdp.net
+
+
+
+
+
+
+
+
+
+ ~University of Kansas Publications~
+ ~Museum of Natural History~
+
+ Volume 7, No. 12, pp. 591-608
+
+ March 15, 1955
+
+
+ Geographic Variation in the Pocket Gopher,
+ Cratogeomys castanops, in Coahuila, Mexico
+
+
+ BY
+ ROBERT J. RUSSELL AND ROLLIN H. BAKER
+
+ ~University of Kansas~
+ ~Lawrence~
+ 1955
+
+
+
+
+
+~University of Kansas Publications, Museum of Natural History~
+
+ Editors: E. Raymond Hall, Chairman, A. Byron Leonard,
+ Robert W. Wilson
+
+ Volume 7, No. 12, pp. 591-608
+ Published March 15, 1955
+
+ ~University of Kansas~
+ ~Lawrence, Kansas~
+
+ PRINTED BY
+ FERD VOILAND, JR., STATE PRINTER
+ TOPEKA, KANSAS
+ 1955
+
+ 25-5679
+
+
+
+
+
+ Geographic Variation in the Pocket Gopher,
+ Cratogeomys castanops, in Coahuila, Mexico
+
+ By
+
+ Robert J. Russell and Rollin H. Baker
+
+
+
+
+The plateau pocket gopher, _Cratogeomys castanops_, inhabits open
+lands from southeastern Colorado southward onto the Mexican
+Plateau as far south as southern San Luis Potosi and southeastern
+Zacatecas and southeastward to the Coastal Plain of northern
+Tamaulipas. This species occurs at elevations from as low as 26 feet
+at Matamoras in Tamaulipas to as high as 8700 feet in valleys of
+south-eastern Coahuila. In 1934, Nelson and Goldman (Proc. Biol. Soc.
+Washington, 47:135-154, June 13, 1934) revised the genus _Cratogeomys_
+and decided that six subspecies of _C. castanops_ occurred in
+Coahuila. In the present account, we describe four previously unknown
+subspecies from Coahuila, exclude from the state two others recorded
+from there by Nelson and Goldman, and show that three others named
+previously from adjacent Mexican states do occur in Coahuila. This
+makes eleven subspecies now known from that state. From Coahuila
+Nelson and Goldman had 35 study specimens of _C. castanops_ from seven
+localities and we have had 234 specimens from 63 localities.
+Consequently we have been able to define with greater certainty, than
+formerly was possible, the geographic distribution of _C. castanops_
+in this Mexican state and similarly analyze more completely the
+geographic variation.
+
+Coahuila is near the center of the geographic range of _C. castanops_.
+The occurrence of 11 subspecies within the state seems to be
+the result of partial or perhaps, in some cases, total isolation of
+populations of _C. castanops_ because of the highly dissected
+topography and the variability of the soil. _Cratogeomys castanops_ is
+a sedentary animal preferring open plains mantled by suitable soils,
+preferably sandy in texture, in which the animals can dig their
+elaborate underground systems of runways. Thin soils of hard texture
+and rocky soils do not offer optimum habitat for _C. castanops_, and
+the animals usually are absent or uncommon in such situations. Desert
+mountains with their thin rocky soils, elevated passes, perpendicular
+rocky cliffs, and stands of oaks and conifers at higher elevations
+present impassable barriers for pocket gophers of this species. The
+Rio Grande, bordering Coahuila to the north, in many places flowing
+through steep-walled canons, also seems to be a barrier that this
+fossorial rodent does not cross; distinct subspecies occur on the two
+sides of the river directly opposite each other (also see Nelson and
+Goldman, _op. cit._: 143). Smaller streams, such as the Rio Salado,
+Rio Nazas and Rio Salinas, seem to be unimportant barriers to the
+passage of these pocket gophers. The food supply of _C. castanops_
+seems adequate in most situations and consequently food is unimportant
+in governing the distribution of this species. Principal foods of _C.
+castanops_ are fleshy tuberous roots of well-distributed desert
+shrubs, but in the valleys of the high mountains of southeastern
+Coahuila, where desert shrubs are absent, roots and leaves of
+low-growing forbs are eaten.
+
+Three distinct habitats for _C. castanops_ occur in Coahuila. The
+state is crossed by a series of mostly impassable, mountainous ridges
+beginning at the northwestern boundary at the Canon de Boquillas on
+the Rio Grande and extending southeastward to the east-central border.
+This divides Coahuila into a more humid and less elevated northeastern
+area which is an inland extension westward of the Coastal Plain and a
+more arid and higher western and southern area which is a part of the
+"Mesa del Norte" of the Mexican Plateau. In the extreme southeast the
+still higher elevated plains and intermontane valleys within the
+Sierra Madre Oriental afford a third habitat for populations of this
+species. The subspecies of these pocket gophers found in any one of
+these three habitats show greater affinity to each other than they do
+to any subspecies found in the other habitats.
+
+Generally speaking, populations of _C. castanops_ from northeastern
+Coahuila are related, as a group, in color and cranial features.
+Partial isolation of subspecies in this area results chiefly from
+discontinuity of suitable soils rather than from topography. These
+pocket gophers occur most commonly in the deep, sandy soils which are
+found along streams, especially where farm lands are irrigated. In
+western and southern Coahuila, mountains extending in both north-south
+and east-west directions act as partial barriers to the passage of _C.
+castanops_. Within this large area, pocket gophers occur in desert
+basins many of which are enclosed on two or more sides by mountains.
+Even so, with the exception of the smaller _C. c. consitus_ of
+northwestern Coahuila, all known subspecies occurring at lower
+elevations in the western and southern part of the state show close
+relationships in color and cranial features. Those subspecies in the
+higher parts of southeastern Coahuila by their small size and dark
+color reflect to a high degree their isolation in an elevated habitat.
+
+Males of _C. castanops_ differ greatly from females of equal age;
+consequently animals of the same sex, as well as of the same age, are
+used herein for taxonomic comparisons. Since, of any given age-group,
+females show less individual variation than do males, we have relied
+more on the characteristics of the females in this taxonomic study.
+Only specimens taken at approximately the same times of the year have
+been compared for color of pelage. Capitalized color terms are those
+of Ridgway, Color Standards and Color Nomenclature, Washington, D. C.,
+1912. Specimens made available through the courtesy of the authorities
+of the Biological Surveys Collection of the United States National
+Museum are indicated in the accounts of subspecies as BSC; other
+specimens listed are in the collection of the University of Kansas
+Museum of Natural History. Assistance with field work is acknowledged
+from the Kansas University Endowment Association and the National
+Science Foundation.
+
+In any one of the lists of "Specimens examined" beyond, the order of
+arrangement of the localities is from north to south. Those localities
+listed in Roman type are represented on the distribution map (Figure
+1) by blacked-in circles. Each of several circles covers two or more
+localities because the localities are close together. In any such
+instance the northernmost place is listed in Roman type and the names
+of the other places follow in Italic type. Measurements in millimeters
+are given in table 1 for females and in table 2 for males.
+
+
+
++Cratogeomys castanops convexus+ Nelson and Goldman
+
+
+1934. _Cratogeomys castanops convexus_ Nelson and Goldman, Proc. Biol.
+Soc. Washington, 47:142, June 13, type from 7 mi. E Las Vacas
+[= Villa Acuna], Rio Grande Valley, Coahuila (opposite Del Rio,
+Texas).
+
+_Distribution._--Extreme northern Coahuila, east and north of the
+Serranias del Burro (see fig. 1).
+
+_Diagnosis._--Previously known from only one specimen, a subadult
+female, this subspecies has not been well diagnosed. At hand we have
+five near topotypes of _convexus_ (including two adult females and one
+adult male) and specimens assignable to this subspecies from several
+other localities. This subspecies may be characterized as follows:
+Size medium (see tables 1 and 2); dorsal profile of skull convex in
+females and flat, especially posteriorly, in males; zygomata weakly
+constructed and not widely flaring; mastoid and tympanic bullae
+inflated; nasals short; rostrum broad and short; maxillary teeth
+large.
+
+[Illustration: ~Fig. 1.~ Geographic ranges of the subspecies of
+ _Cratogeomys castanops_ found in Coahuila, Mexico.
+
+Guide to subspecies 4. _C. c. bullatus_ 8. _C. c. subsimus_
+1. _C. c. convexus_ 5. _C. c. ustulatus_ 9. _C. c. goldmani_
+2. _C. c. consitus_ 6. _C. c. jucundus_ 10. _C. c. subnubilus_
+3. _C. c. sordidulus_ 7. _C. c. excelsus_ 11. _C. c. planifrons_]
+
+_Comparisons._--From topotypes of _Cratogeomys castanops angusticeps_
+Nelson and Goldman, found to the north and east across the Rio Grande
+in Texas, _convexus_ differs in: Body larger; upper parts more
+reddish, especially on sides; skull with zygomata less heavy, nasals
+broader, pterygoids smaller, maxillary teeth larger. For comparisons
+of _convexus_ with the subspecies of _C. castanops_ found to the west,
+south and southeast, see accounts of the subspecies to follow.
+
+_Remarks._--The geographic range of _convexus_ is restricted, being
+bounded on the west and southwest by mountains, especially the
+Serranias del Burro, and on the north and east by the Rio Grande. The
+range of the subspecies found to the southeast may not be continuous
+with that of _convexus_. At least, in the area between Villa Acuna and
+Piedras Negras, along the Rio Grande, no specimens were obtained and
+no sign was observed. We suspect that in this area the species occurs
+only locally if at all.
+
+A specimen taken near the Rio Grande in Coahuila, opposite Samuels,
+Texas, and assigned to _Cratogeomys castanops clarkii_ by Nelson and
+Goldman (op. cit.:140), has been examined by us and is referable to
+_convexus_. This specimen is typical of _convexus_ except for the
+lesser inflation of the mastoid bullae and tympanic bullae.
+Conspicuous differences between _convexus_ and _angusticeps_
+indicate that the Rio Grande is an effective barrier to passage by
+these rodents.
+
+_Specimens examined._--Total, 14, all from Coahuila: Rio Grande, 17
+mi. S Dryden, Terrell Co., Texas, 6; Rio Grande, opposite Samuels, Val
+Verde Co., Texas, 1 (BSC); Villa Acuna, 5; Canon del Cochino, 21 mi. E
+and 16 mi. N Piedra Blanca, 1; 11 mi. W Hda. San Miguel, 1.
+
+
+
++Cratogeomys castanops bullatus+ new subspecies
+
+
+_Type._--Female, adult, skin and skull, No. 48498, Univ. Kansas Mus.
+Nat. Hist., 2 mi. S and 6-1/2 mi. E Nava, 810 ft., Coahuila; 16 June
+1952; obtained by Robert J. Russell, original number 276.
+
+_Distribution._--Desert lowlands of northeastern Coahuila, from the
+Rio Grande to as far southwestward as the Rio Sabinas (see fig. 1).
+
+_Diagnosis._--Body medium for the species (see tables 1 and 2); tail
+long; hind foot small; upper parts Light Ochraceous-Buff (in summer
+pelage) and Orange-Buff (in winter pelage), bases of hairs Plumbeous;
+underparts white to pale buffy; skull small, broad and slightly convex
+in dorsal outline; zygomata widely flaring; palate short; rostrum
+short; nasals short; mastoid and tympanic bullae inflated;
+basioccipital with lateral edges parallel; maxillary teeth small.
+
+_Comparisons._--From _Cratogeomys castanops convexus_, found to the
+north, _bullatus_ differs in: Hind foot shorter; skull much broader in
+relation to length; rostrum narrower but, relative to length of skull,
+wider; tympanic bullae slightly more inflated; incisors and maxillary
+teeth smaller. From topotypes of _Cratogeomys castanops angusticeps_,
+found across the Rio Grande and upstream from localities where
+_bullatus_ is known to occur, _bullatus_ differs in: Body slightly
+smaller; color paler, especially on sides; skull shorter and broader;
+rostrum shorter and broader; nasals shorter; mastoid and tympanic
+bullae more inflated; maxillary teeth smaller. For comparisons of
+_bullatus_ with the subspecies of _C. castanops_ found to the west and
+south, see accounts of the subspecies to follow.
+
+_Remarks._--_Cratogeomys castanops bullatus_ in small size resembles
+_C. c. tamaulipensis_ Nelson and Goldman of the lower Rio Grande
+Valley in Tamaulipas, but the two differ markedly in cranial features.
+_Cratogeomys c. bullatus_ is smaller than _convexus_ but these two
+subspecies resemble each other in color and cranial characters. Both
+have an arched skull, inflated mastoid and tympanic bullae, short
+nasals, and a short rostrum. Comparison of _bullatus_ with
+_angusticeps_, which occurs across the Rio Grande but not directly
+opposite the range of _bullatus_, indicates that these two subspecies
+are less closely related than _bullatus_ is to _tamaulipensis_ and
+_convexus_.
+
+_Cratogeomys castanops bullatus_ is especially common in sandy
+soils in the vicinity of Nava where the mounds were in fallow
+irrigated fields and other open places between extensive live oak
+thickets. South and west of the Rio Grande the animals were less
+abundant and lived in heavier soils usually as individuals or in small
+groups. Specimens were taken at elevations from as low as 800 feet to
+as high as 2,000 feet.
+
+_Specimens examined._--Total, 24, from: 2 mi. S and 6-1/2 mi. E Nava,
+810 ft., 2; 2 mi. S and 12 mi. E Nava, 800 ft., 1; _3 mi. S and 12 mi.
+E Nava, 800 ft._, 4; 29 mi. N and 6 mi. E Sabinas, 5; 10 mi. E
+Hacienda La Mariposa, 2000 ft., 1; La Gacha [= La Concha], 1600 ft.,
+8; 8 mi. S and 8 mi. E Hacienda La Mariposa, 1900 ft., 1; 9 mi. S and
+11 mi. E Sabinas, 1050 ft., 2.
+
+
+
++Cratogeomys castanops ustulatus+ new subspecies
+
+
+_Type._--Female, adult, skin and skull, No. 34589, Univ. Kansas Mus.
+Nat. Hist., Don Martin, 800 ft., Coahuila; 19 August 1949; obtained by
+W. Kim Clark, original number 1034.
+
+_Distribution._--Extreme northeastern Coahuila from the vicinity of
+Presa Don Martin southward into northwestern Neuvo Leon in the valley
+of the Rio Salado and its tributaries at least as far south as the
+vicinity of Vallecillo (see fig. 1).
+
+_Diagnosis._--Body large for species (see tables 1 and 2); hind foot
+short; upper parts Apricot Buff (in fresh summer pelage) and
+Salmon-Buff strongly mixed with black (in fresh winter pelage);
+underparts Light Ochraceous-Buff; skull large, especially in females,
+and broad; zygomatic arches widely flaring; palate long; rostrum
+broad; nasals long; mastoid and tympanic bullae not conspicuously
+inflated; incisors narrow; maxillary teeth large.
+
+_Comparisons._--From _Cratogeomys castanops bullatus_ found to the
+north, _ustulatus_ differs in: Body larger; tail shorter; upper parts
+darker, more rufous and less buffy; skull larger, especially in
+palate, nasals, and rostrum; zygomata more widely flaring; tympanic
+bullae less inflated; incisors slightly larger; maxillary teeth
+larger. From topotypes of _Cratogeomys castanops tamaulipensis_
+found to the southeast, _ustulatus_ differs in: Body larger; upper
+parts, in winter pelage, darker, more rufous and less buffy;
+underparts paler; skull larger, especially in palate, rostrum and
+nasals; zygomata more widely flaring; tympanic bullae more inflated;
+pterygoids larger; basioccipital narrower, its sides parallel instead
+of convex; maxillary teeth smaller. From _Cratogeomys castanops
+subsimus_, found to the southwest, _ustulatus_ differs in: Tail
+shorter; hind foot smaller; upper parts darker, more rufous and less
+pinkish-buff; skull shorter; zygomata less widely flaring; palate
+shorter; rostrum averaging slightly narrower; nasals shorter; incisors
+narrower; maxillary teeth slightly smaller. For comparison of
+_ustulatus_ with the subspecies of _C. castanops_ to the southwest,
+see account of that subspecies to follow.
+
+_Remarks._--_Cratogeomys castanops ustulatus_ is a large-sized pocket
+gopher with a relatively larger, skull. In size oL skull, _ustulatus_
+is exceeded only by _C. c. subsimus_ found beyond the mountains in the
+southern part of Coahuila. In size, _ustulatus_ differs so markedly
+from _bullatus_ that the two can be distinguished easily by this
+feature alone. The skull of _C. c. convexus_ approaches that of
+_ustulatus_ in size, but is smaller in all respects, save breadth of
+rostrum.
+
+This pocket gopher is found commonly along the Rio Salado and its
+watershed. Fallow cotton fields in the vicinity of Anahuac [=
+Rodriques], Nuevo Leon, are preferred living places. This subspecies
+was found at elevations as high as 1000 feet and as low as 600 feet.
+
+_Specimens examined._--Total, 10, from: Don Martin, 800 ft., 5; _base
+of Don Martin Dam_, 2; _2 mi. SE Don Martin Dam, along Rio Salado_, 2;
+5 mi. SE Don Martin, 1.
+
+_Records from Nuevo Leon._--Total, 14, from: 9 mi. N and 2 mi. W
+Anahuac [= Rodriques], 1; 4 mi. N and 1 mi. W Anahuac [= Rodriques],
+5; 3 mi. N Lampazos, 4; 1 mi. N Vallecillo, 1000 ft., 1; Vallecillo,
+20 mi. S Rio Salado, 1000 ft., 3.
+
+
+
++Cratogeomys castanops jucundus+ new subspecies
+
+
+_Type._--Female, adult, skin and skull; No. 56603, Univ. Kansas Mus.
+Nat. Hist.; Hermanas, 1205 ft., Coahuila; 5 December 1953; obtained by
+Robert W. Dickerman, original number 2051.
+
+_Distribution._--Arid plains and broad intermontane valleys of
+east-central Coahuila (see fig. 1).
+
+_Diagnosis._--Body largest for the species (see table 1); tail long;
+hind foot large; upper parts in winter pelage Ochraceous-Buff, in
+summer pelage Antimony Yellow; underparts Pale Ochraceous-Buff; skull
+medium in size, broad; zygomata moderately flaring; palate medium in
+length; rostrum broad; nasals moderately long; maxillary teeth small.
+
+_Comparisons._--From _Cratogeomy castanops ustulatus_, found to the
+east, jucundus differs in: Body larger; tail longer; hind foot larger;
+upper parts paler, more ochraceous and less rufous; skull averaging
+smaller; zygomata slightly less expanded laterally; palate and nasals
+shorter; squamosal breadth less; mastoid bullae less inflated,
+especially in females; rostrum slightly narrower; maxillary tooth-row
+shorter. From topotypes of _Cratogeomys castanops tamaulipensis_,
+found to the southeast, _jucundus_ differs in: Body larger; tail
+longer; hind foot smaller; upper parts, in winter pelage, paler, more
+ochraceous and less rufous; skull larger; zygomata more widely
+flaring; palate longer; rostrum broader; tympanic bullae more
+inflated; basioccipital with sides parallel instead of convex;
+maxillary teeth smaller. From _Cratogeomy castanops excelsus_, found
+to the southwest, _jucundus_ differs in: Body larger; hind foot
+averaging larger; upper parts darker, more ochraceous, and less buffy;
+underparts darker, more buffy and less whitish; skull slightly
+smaller; zygomata less widely flaring, especially in females; palate
+shorter; nasals shorter; squamosal breadth less; mastoid bullae more
+inflated; incisors narrower. From _Cratogeomys castanops subsimus_,
+found to the south, _jucundus_ differs in: Body larger; tail shorter;
+hind foot shorter; upper parts paler, more ochraceous and less
+yellowish; skull smaller; zygomata less widely expanded laterally;
+palate and nasals shorter; rostrum narrower; squamosal breadth less;
+maxillary tooth-row shorter. From _Cratogeomys castanops bullatus_,
+found to the north, _jucundus_ differs in: Body larger; tail averaging
+longer; hind foot larger; color of upper parts more ochraceous and
+less rufous; underparts darker, more buffy and less whitish; skull
+larger, especially in length, in width across zygomata, in lengths of
+palate, rostrum and nasals; mastoid and tympanic bullae less inflated;
+squamosal breadth greater.
+
+_Remarks._--_Cratogeomys castanops jucundus_ is large, exceeding
+subsimus in dimensions of the body, but differing from _subsimus_ in
+relatively smaller skull. Passage to the north and northeast by
+_jucundus_ is at least partly blocked by inhospitable mountainous
+country; the resulting semi-isolation may be one reason for the
+distinctive characteristics of _jucundus_ compared with those of
+_bullatus_ and _ustulatus_. Two specimens from Monclova, assigned to
+_tamaulipensis_ by Nelson and Goldman (op. cit.:142), are here
+referred to _jucundus_ on the basis of cranial characters and size.
+
+Specimens were trapped in fallow irrigated fields in the vicinity
+of Monclova. Others were taken in deep soils in desert flats.
+
+_Specimens examined._--Total, 19, from: Hermanas, 1205 ft., 9; _1 mi.
+S Hermanas_, 2; 1 mi. N and 13 mi. E Cuatro Cienegas, 2; 5 mi. N and
+2 mi. W Monclova, 1; _2 mi. N and 1 mi. E Monclova_, 1; Monclova, 2
+(BSC); Hisachalo [= Huisachalo], 2.
+
+
+
++Cratogeomys castanops sordidulus+ new subspecies
+
+
+_Type._--Female, adult, skin and skull; No. 56614, Univ. Kansas Mus.
+Nat. Hist.; 1.5 mi. NW Ocampo, 3300 ft., Coahuila; 16 December 1953;
+obtained by Robert W. Dickerman, original number 2164.
+
+_Distribution._--Desert plains of north-central Coahuila, surrounded
+for the most part by higher mountainous country (see fig. 1).
+
+_Diagnosis._--Body large for species (see tables 1 and 2); tail short;
+hind foot large; upper parts Ochraceous-Buff (in summer pelage) and
+Orange-Buff (in fresh winter pelage); underparts Pale
+Ochraceous-Salmon; skull medium in size and narrow; zygomata narrow;
+rostrum narrow; palate short; nasals medium in length; basioccipital
+small and narrow; mastoid bullae not greatly inflated; tympanic bullae
+inflated; incisors small; maxillary teeth small.
+
+_Comparisons._--From _Cratogeomys castanops jucundus_, found beyond
+the mountains to the southeast, _sordidulus_ differs in: Body smaller;
+tail shorter; hind foot slightly smaller; upper parts darker, more
+ochraceous and less yellowish, with plumbeous bases of hairs more
+conspicuous; underparts darker, more buffy and less whitish; skull
+slightly shorter, more nearly flat, and narrower; zygomata less widely
+flaring; rostrum narrower; mastoid bullae less inflated; incisors and
+maxillary teeth slightly smaller. From _Cratogeomys castanops
+excelsus_, found to the south and southwest, _sordidulus_ differs in:
+Body slightly smaller; tail shorter; hind foot slightly larger; upper
+parts darker, more ochraceous and less pinkish-buff; underparts
+darker, more buffy and less whitish; skull smaller and narrower;
+zygomata less widely flaring; sides more nearly parallel and not
+expanded anteriorly; palate shorter; rostrum narrower and, in relation
+to greatest length of skull, longer; tympanic bullae slightly more
+inflated; incisors and maxillary teeth smaller. From _Cratogeomys
+castanops consitus_, found to the north and west, _sordidulus_ differs
+in: Body larger; hind foot larger; upper parts paler, more ochraceous
+and less rufous; skull decidedly larger and wider; zygomata more
+widely flaring; palate and nasals longer; rostrum broader; mastoid
+bullae and tympanic bullae larger; maxillary teeth smaller. From
+topotypes of _Cratogeomys castanops clarkii_ (Baird), found to the
+northwest, _sordidulus_ differs in: Body larger; tail shorter; upper
+parts, in winter pelage, paler, more ochraceous and less dark-rufous;
+skull slightly smaller and narrower; rostrum narrower; nasals slightly
+shorter; sides of basioccipital more nearly parallel instead of
+wedge-shaped; mastoid bullae less inflated; incisor and maxillary
+teeth smaller. From _Cratogeomys castanops convexus_, found to the
+northeast, _sordidulus_ differs in: Body larger; tail shorter; upper
+parts slightly darker, more ochraceous and less buffy; skull narrower;
+zygomata more nearly parallel and less expanded anteriorly; rostrum
+narrower and longer; nasals longer; squamosal breadth greater; mastoid
+bullae less inflated; maxillary teeth smaller. From _Cratogeomys
+castanops bullatus_, found to the east, _sordidulus_ differs in: Body
+larger; hind foot larger; upper parts darker, more ochraceous and less
+buffy; skull larger in all respects; zygomata more widely flaring;
+tympanic bullae less inflated; maxillary teeth larger.
+
+_Remarks._--_Cratogeomys castanops sordidulus_ is limited to the
+Llano de Ocampo, an elevated, desert plain surrounded on three sides,
+west, south and east, by higher mountainous country which seems to bar
+the passage of this rodent. On the eastern side this barrier extends
+north to the very banks of the Rio Grande in the Canon de Boquillas.
+This subspecies, therefore, is in contact with other populations of
+_Cratogeomys_ only to the north and northwest. This subspecies is well
+characterized by size, color and cranial characteristics.
+
+_Cratogeomys castanops sordidulus_ is not abundant; groups of mounds
+constructed by one or a few individuals were found in widely separated
+places. Mounds were often small, appeared old and, in other ways, were
+inconspicuous on arid flats. The animals were taken at elevations as
+low as 3250 feet and as high as 4150 feet.
+
+_Specimens examined._--Total, 13, from: 50 mi. N and 20 mi. W Ocampo,
+4150 ft., 1; 18 mi. S and 14 mi. E Tanque Alvarez, 4000 ft., 4; 1-1/2
+mi. NW Ocampo, 3300 ft., 6; _Ocampo_, 1; 5 mi. N and 19 mi. W Cuatro
+Cienegas, 3250 ft., 1.
+
+
+
++Cratogeomys castanops consitus+ Nelson and Goldman
+
+
+1934. _Cratogeomys castanops consitus_ Nelson and Goldman, Proc. Biol.
+Soc. Washington, 47:140, June 13, type from Gallego, 5500 ft.,
+Chihuahua.
+
+_Distribution._--Arid high plains from central Chihuahua, east and
+southeast at least into northwestern Coahuila (see fig. 1).
+
+_Comparisons._--From _Cratogeomys castanops lacrimalis_ Nelson and
+Goldman, specimens from Boquillas and Marathon north of the Rio Grande
+in Texas, _consitus_ differs in: Body smaller; tail and hind foot
+shorter; upper parts paler, more light buffy and less rufous;
+underparts paler, light buffy instead of dark buffy; skull decidedly
+smaller; zygomata slightly less widely flaring; palate especially
+shorter; rostrum narrower; squamosal breadth less; incisors smaller.
+From topotypes of _Cratogeomys castanops clarkii_, found to the north
+along the Rio Grande, _consitus_ differs in: Body smaller; tail and
+hind foot shorter; upper parts paler, more buffy and less rufous;
+skull markedly smaller, especially in palate and nasals; zygomata less
+widely flaring; tympanic bullae more inflated; mastoid bullae less
+inflated; basioccipital parallel-sided as opposed to wedge-shaped.
+From _Cratogeomys castanops convexus_, found to the east, _consitus_
+differs in: Body smaller; tail and hind foot shorter; upper parts
+paler, more buffy and less ochraceous; underparts paler, white or
+light buffy instead of pale ochraceous; skull smaller; zygomata less
+widely flaring; palate shorter; rostrum decidedly narrower and,
+relative to length of skull, longer; squamosal breadth less; incisors
+smaller. From _Cratogeomys castanops excelsus_, found to the south,
+_consitus_ differs in: Size smaller; tail and hind foot shorter; upper
+parts darker, more rufous and less pinkish-buff; skull conspicuously
+smaller, especially in palate, rostrum, and nasals; zygomata less
+widely flaring; mastoid bullae and tympanic bullae more inflated;
+incisors smaller; maxillary teeth relatively larger. For comparison of
+_consitus_ with _Cratogeomys castanops sordidulus_, see previous
+account.
+
+
+_Remarks._--_Cratogeomys castanops consitus_ is a small pocket gopher
+(see tables 1 and 2); the largest adult available to us is much
+smaller than the smallest adult of any adjacent subspecies. Specimens
+from Coahuila assigned to _consitus_ compare favorably with
+topotypes although those from the vicinity of Jaco are smaller, paler
+and have a narrower rostrum and smaller maxillary teeth. An immature
+male trapped three miles northeast of Sierra Mojada is tentatively
+assigned to _consitus_. This subspecies seems to be rare in
+northwestern Coahuila and small colonies are widely scattered.
+
+_Cratogeomys castanops clarkii_ (Baird) may occur along the Rio
+Grande in extreme northwestern Coahuila. No specimens are known from
+Coahuila, and none was found in the vicinity of Boquillas, Coahuila,
+in 1952.
+
+_Specimens examined._--Total, 8, from: 3 mi. N and 9 mi. E El Pino, 1;
+6 mi. E Jaco, Chihuahua, _in_ Coahuila, 6; 3 mi. NE Sierra Mojada, 1.
+
+
+
++Cratogeomys castanops excelsus+ Nelson and Goldman
+
+
+1934. _Cratogeomys castanops excelsus_ Nelson and Goldman, Proc. Biol.
+Soc. Washington, 47:143, June 13, type from San Pedro, 10 mi. W Laguna
+de Mayran, Coahuila.
+
+_Distribution._--Desert plains of southwestern Coahuila and
+northeastern Durango (see fig. 1).
+
+_Comparisons._--_Cratogeomys castanops excelsus_ is characterized by
+large size and pale color; it is the palest subspecies of _C.
+castanops_. Of adjacent subspecies, excelsus most closely resembles
+_C. c. subsimus_ which occurs to the east and resembles least _C. c.
+consitus_, which occurs to the northwest.
+
+From _Cratogeomys castanops subsimus_, found to the east, _excelsus_
+differs in: Body averaging slightly larger; tail and hind foot
+shorter; upper parts paler, more light buffy and less yellowish; skull
+smaller; palate especially shorter; rostrum narrower; nasals shorter;
+incisors slightly smaller; maxillary tooth-row shorter. Compared with
+topotypes of _C. c. goldmani_, found to the south, _excelsus_ differs
+in: Body larger; hind foot smaller; upper parts in winter pelage
+paler, more buffy and less rufous; skull larger; zygomata more widely
+flaring; rostrum broader; nasals shorter; tympanic bullae larger and
+more inflated; maxillary teeth larger.
+
+Specimens of _excelsus_ from the vicinity of Torreon, in southwestern
+Coahuila, are slightly smaller in cranial dimensions than more typical
+examples of the subspecies. In small size, at least, these specimens
+show some resemblance to _goldmani_ to the south. The range of
+_excelsus_ approaches that of _C. c. consitus_ in west-central
+Coahuila (see fig. 1), but no evidence of intergradation between these
+two subspecies could be ascertained. For comparison of _excelsus_ with
+_consitus_, see account of the latter.
+
+
+_Remarks._--_Cratogeomys castanops excelsus_ lives in the deep soils
+of the arid interior basin of southwestern Coahuila and adjacent
+parts of Durango. This animal is common in the cultivated areas in,
+and in the vicinity of, the formerly extensive Laguna de Mayran. East
+of this laguna the land becomes progressively higher, and _C. c.
+subsimus_ occurs in the higher, more dissected part of this area.
+
+
+_Specimens examined._--Total, 33, from: 8 mi. E and 2 mi. S
+Americanos, 3500 ft., 3; 4 mi. N Acatita, 3600 ft., 9; 20 mi. S El
+Hundido, 1; San Pedro, 2 (BSC); _1 mi. SW San Pedro de las Colonias,
+3700 ft._, 4; 10 mi. N and 11 mi. W San Lorenzo, 2; 2 mi. E Torreon,
+12.
+
+
+
++Cratogeomys castanops subsimus+ Nelson and Goldman
+
+
+1934. _Cratogeomys castanops subsimus_ Nelson and Goldman, Proc. Biol.
+ Soc. Washington, 47:144, June 13, type from Jaral, Coahuila.
+
+_Distribution._--Desert plains and lower foothills of mountains in
+south-central Coahuila (see fig. 1).
+
+_Comparisons._--From _Cratogeomys castanops goldmani_, found to the
+southwest, _subsimus_ differs in: Body larger; hind foot larger; upper
+parts paler, more yellowish and less rufous; skull larger and rougher,
+having more prominent ridges and crests and deeper fossae for
+attachment of muscles; zygomata more widely flaring; palate longer;
+rostrum broader; nasals longer; squamosal breadth greater; maxillary
+teeth larger. From _C. c. subnubilus_, found to the south, _subsimus_
+differs in: Body larger; tail and hind foot shorter; upper parts
+paler, more yellowish-buff and less blackish; skull decidedly larger
+in all respects. From _C. c. planifrons_, found at higher elevations
+to the southeast, _subsimus_ differs in the same respects as
+_subsimus_ differs from _subnubilus_. For comparisons between
+_subsimus_ and subspecies to the west, north and northeast, see
+accounts above.
+
+
+
+TABLE 1. ~Measurements of Adult Female Cratogeomys
+ from Coahuila, Mexico~
+
+
+Table legend:
+ Column A: No. av. or cat. no.
+ Column B: Total length
+ Column C: Length of tail
+ Column D: Length of hind foot
+ Column E: Condylobasal breadth
+ Column F: Zygomatic breadth
+ Column G: Length of palate
+ Column H: Breadth of rostrum
+ Column I: Length of nasals
+ Column J: Squamosal breadth
+ Column K: Alveolar length of maxillary tooth-row
+
+========================================================================
+ A B C D E F G H I J K
+------------------------------------------------------------------------
+ _C. c. convexus_, Villa Acuna
+52259 260 86 37 50.6 31.7 33.8 11.7 16.7 29.1 9.3
+52261 265 83 38 49.3 31.6 32.9 11.8 15.8 28.9 10.6
+
+ _C. c. bullatus_, vicinity of Nava
+5 Av. 256 80 36 47.4 30.6 32.6 10.7 17.1 27.9 9.5
+Min. 242 72 35 47.0 30.6 32.3 10.0 16.5 27.5 9.2
+Max. 263 85 37 47.7 31.1 32.9 11.6 17.8 28.2 9.8
+
+ _C. c. ustulatus_, vicinity of Don Martin
+8 Av. 273 74 36 51.4 33.5 35.4 11.8 18.8 30.1 10.0
+Min. 261 64 35 50.7 32.6 34.8 11.0 17.8 29.1 9.3
+Max. 280 83 38 52.1 34.1 36.5 12.5 19.2 30.8 10.6
+
+ _C. c. jucundus_, Hermanas
+4 Av. 296 85 39 50.9 33.0 34.6 11.5 18.0 29.6 9.4
+Min. 294 83 38 49.8 32.1 33.8 11.0 17.0 29.0 9.1
+Max. 298 86 39 51.8 33.8 35.0 11.6 18.6 30.1 9.6
+
+ _C. c. sordidulus_, 1.5 mi. NW Ocampo
+3 Av. 276 79 37 50.4 31.7 34.6 10.9 18.2 30.0 9.1
+Min. 270 75 36 49.5 30.6 33.8 10.3 17.7 29.8 8.9
+Max. 288 85 39 51.4 32.4 35.2 11.4 18.5 30.1 9.2
+
+ _C. c. consitus_, 6 mi. E Jaco, Chihuahua, in Coahuila
+4 Av. 229 74 32 43.8 28.1 29.6 9.7 16.0 26.2 8.9
+Min. 226 68 31 42.6 27.3 29.4 9.4 15.5 25.7 8.1
+Max. 232 78 32 45.8 28.8 29.9 9.9 16.2 26.9 9.2
+
+ _C. c. excelsus_, 4 mi. N Acatita
+4 Av. 284 82 37 51.4 34.1 35.4 11.6 18.9 31.2 9.5
+Min. 274 77 35 51.1 33.6 34.7 10.4 18.4 30.5 9.2
+Max. 291 86 38 51.6 34.9 36.1 12.1 20.1 31.7 9.9
+
+ _C. c. subsimus_, 12 mi. N and 10 mi. E Parras
+34937 287 87 39 53.1 34.9 36.9 11.5 19.4 31.7 10.5
+
+ Jaral (BSC)
+51049 295 104 40 53.2 34.1 36.9 12.6 18.7 29.7 10.0
+
+ _C. c. goldmani_, 1 mi. S Jimulco
+55611 250 85 35 46.0 32.6 31.4 10.7 16.3 27.8 9.8
+
+ _C. c. subnubilus_, 1 mi. S Carneros
+33128 220 65 29 40.8 27.9 27.2 8.7 12.7 24.7 8.1
+
+ 2 mi. W San Miguel
+33132 222 65 30 40.4 26.3 26.6 8.1 13.2 24.5 8.4
+
+ 1 mi. N Agua Nueva
+33127 220 74 29 41.8 24.6 28.4 8.3 14.2 23.9 8.4
+
+ 8 mi. N La Ventura
+34934 235 76 30 42.2 27.9 28.5 9.0 14.3 26.3 7.8
+
+ _C. c. planifrons_, 12 mi. W San Antonio de las Alazanas
+5 Av. 244 66 32 43.7 28.0 29.1 9.4 14.5 26.2 8.6
+Min. 239 62 31 43.3 27.5 28.7 8.9 13.6 25.3 8.3
+Max. 247 69 33 44.3 28.5 9.4 9.7 15.3 26.8 8.9
+-------------------------------------------------------------------------
+
+
+
+TABLE 2. ~Measurements of Adult Male Cratogeomys from Coahuila, Mexico~
+
+
+Table legend:
+ Column A: No. av. or cat. no.
+ Column B: Total length
+ Column C: Length of tail
+ Column D: Length of hind foot
+ Column E: Condylobasal breadth
+ Column F: Zygomatic breadth
+ Column G: Length of palate
+ Column H: Breadth of rostrum
+ Column I: Length of nasals
+ Column J: Squamosal breadth
+ Column K: Alveolar length of maxillary tooth-row
+
+========================================================================
+ A B C D E F G H I J K
+------------------------------------------------------------------------
+ _C. c. convexus_, Villa Acuna
+52260 275 89 39 55.0 34.4 37.0 12.6 20.0 30.9 10.4
+
+ _C. c. bullatus_, 3 mi. S and 12 mi. E Nava
+48500 261 80 36 49.7 35.3 34.4 12.4 17.1 29.2 9.5
+
+ La Gacha
+57028 250 76 34 49.9 34.0 34.4 11.5 16.6 28.4 9.3
+
+ _C. c. ustulatus_, Don Martin
+34587 280 75 37 54.6 37.3 38.2 13.7 20.6 31.8 10.3
+
+ _C. c. jucundus_, Hermanas
+56605 311 80 42 56.9 38.7 40.1 13.3 21.0 32.3 9.9
+
+ _C. c. sordidulus_, 1.5 mi. NW Ocampo
+56733 307 88 37 57.5 49.6 40.3 13.6 22.1 33.1 10.3
+
+ _C. c. consistus_, 3 mi. N and 9 mi. E El Pino
+54547 289 94 36 53.8 32.6 37.1 12.7 18.8 29.5 9.6
+
+ _C. c. excelsus_, 2 mi. E Torreon
+40224 315 97 41 54.7 37.8 37.6 12.1 19.5 31.4 9.8
+
+ _C. c. subsimus_, Hda. El Tulillo, 5 km. S Hipolito
+35772 315 105 40 56.4 35.3 39.5 12.5 20.8 33.8 10.6
+
+ 2 mi. N Santa Cruz
+48517 316 89 40 58.2 37.9 40.3 14.1 21.7 34.8 10.3
+
+ _C. c. goldmani_, W foot Pico de Jimulco
+55610 255 82 36 48.9 33.4 33.4 11.7 17.7 29.6 9.3
+
+ _C. c. subnubilus_, Carneros (BSC)
+79484 247 86 34 45.3 30.9 30.8 9.6 15.7 28.4 8.5
+
+ 8 mi. N La Ventura
+34932 250 79 34 46.3 31.8 31.0 9.6 16.4 28.7 8.4
+
+ _C. c. planifrons_, 4 mi. S and 6 mi. E Saltillo
+35779 254 76 34 48.0 32.2 32.6 9.8 16.6 28.0 8.6
+35780 272 85 35 48.8 33.2 34.1 10.5 17.5 29.9 9.5
+
+ 12 mi. S and 2 mi. E Arteaga
+33122 255 72 35 47.0 32.3 31.2 10.5 15.5 28.7 9.0
+------------------------------------------------------------------------
+
+
+
+_Remarks._--_Cratogeomys castanops subsimus_ is the largest known
+subspecies of the species in cranial dimensions, but is exceeded in
+size of body by _C. c. jucundus_ to the north. Of adjacent subspecies,
+_subsimus_ is the most closely related to _excelsus_ and shows little
+or no relationship to the smaller and darker _C. c. subnubilus_ and
+_C. c. planifrons_, which are found at higher elevations to the south
+and southeast, respectively. Movements by _subsimus_ to the north,
+east, and south are barred by inhospitable mountains. Specimens of
+_subsimus_ from the northeastern part of its range are larger and
+darker than other specimens assigned to this subspecies. An adult
+female, assigned to _subsimus_, from the vicinity of Santa Rosa is
+noticeably smaller and paler than typical specimens of this
+subspecies.
+
+_Cratogeomys castanops subsimus_ occurs in scattered colonies in
+sandy soils principally in the upper drainage of the Rio Salinas.
+Specimens have also been taken from the foothills of the Sierra
+Madre Oriental and westward on the elevated desert plains.
+
+
+_Specimens examined._--Total, 22, from: 3 mi. S and 3 mi. E Muralla,
+3800 ft., 3; 2 mi. N Santa Cruz, 2; 21 mi. S and 11 mi. E Australia,
+4400 ft., 6; Jaral, 3860 ft., 4 (BSC); _Hacienda El Tulillo, 5 km. S
+Hipolito_, 2; 17 mi. N and 8 mi. W Saltillo, 5200 ft., 1; 3 mi. N and
+5 mi. W La Rosa, 3600 ft., 1; 12 mi. N and 10 mi. E Parras, 5000 ft.,
+1; N foot Sierra Guadalupe, 9 mi. S and 5 mi. W General Cepeda, 6200
+ft., 1; _N foot Sierra Guadalupe, 10 mi. S and 5 mi. W General Cepeda,
+6500 ft._, 1.
+
+
+
++Cratogeomys castanops goldmani+ Merriam
+
+
+1895. _Cratogeomys castanops goldmani_ Merriam, N. Amer. Fauna 8:160,
+ January 31, type from Canitas, Zacatecas.
+
+
+_Distribution._--Plains of northeastern Zacatecas, northward into
+extreme southwestern Coahuila (see fig. 1).
+
+_Comparisons._--Compared with _Cratogeomys castanops subnubilus_,
+found to the east, _goldmani_ differs in: Body larger, tail and hind
+foot longer; color paler, more rufous and less blackish; skull larger;
+zygomata more widely flaring; palate larger; rostrum broader; nasals
+longer; maxillary teeth larger. Compared with _Cratogeomys castanops
+rubellus_ Nelson and Goldman, found to the southeast, _goldmani_
+differs in: Body and skull smaller; zygomata less widely flaring;
+palate shorter; rostrum narrower; maxillary teeth smaller.
+
+_Remarks._--Records of _goldmani_ given here extend the known range of
+this subspecies northward into southwestern Coahuila. Specimens
+assigned to this subspecies from Coahuila compare favorably with
+topotypes of _goldmani_ (see tables 1 and 2) but are slightly paler,
+and in this respect show some relationship to _excelsus_. The ranges
+of these two subspecies however, are partly isolated by mountainous
+country in southern Coahuila.
+
+_Specimens examined._--Total, 6, from: W foot Pico de Jimulco, 4600
+ft., 1; _Valley Rio Aguanaval, 1 mi. S Jimulco_, 4; 1-1/2 mi. N
+Parras, 1.
+
+
+
++Cratogeomys castanops subnubilus+ Nelson and Goldman
+
+
+1934. _Cratogeomys castanops subnubilus_ Nelson and Goldman, Proc.
+ Biol. Soc. Washington, 47:145, June 13, type from Carneros, 6800
+ ft., Coahuila.
+
+
+_Distribution._--Intermontane valleys and plains of southeastern
+Coahuila and probably adjacent parts of Zacatecas, San Luis Potosi and
+Nuevo Leon (see fig. 1).
+
+_Comparisons._--_Cratogeomys castanops subnubilus_ needs close
+comparison only with _Cratogeomys castanops planifrons_, found to the
+east and from which _subnubilus_ differs in: Body, hind foot and skull
+smaller; upper parts, in summer pelage, paler, more rufous-buff and
+less dark russet; underparts paler, more whitish and less blackish;
+hairs of hind foot reddish rather than blackish; zygomata more widely
+flaring; palate shorter, especially in females; rostrum broader,
+especially in females; nasals slightly smaller; squamosal breadth
+greater; incisors narrower, especially in males; maxillary teeth
+smaller. From _Cratogeomys castanops rubellus_ Nelson and Goldman,
+found to the south in San Luis Potosi, _subnubilus_ differs in: Body,
+hind foot and all parts of skull smaller; upper parts and underparts
+darker, more blackish and less rufous.
+
+
+_Remarks._--_Cratogeomys castanops subnubilus_ is the smallest
+subspecies of _C. castanops_ (see tables 1 and 2). This subspecies is
+dark and lives at high elevations (5500 ft. to 6800 ft.) in deep
+valley soils in relatively isolated intermontane valleys and elevated
+plains. It is differentiated to a much higher degree from adjacent
+subspecies of _C. castanops_ than is usual in this species, and no
+intergrades between _subnubilus_ and other subspecies have been taken.
+In the Sierra Guadalupe, _subnubilus_ was trapped at 6700 feet within
+twomiles of a place where _subsimus_ was taken at 6500 feet.
+
+
+_Specimens examined._--Total, 31, from: 1 mi. N Agua Nueva, 5500 ft.,
+1; Domingo Canon, Sierra Guadalupe, 6700 ft., 11 mi. S and 4 mi. W
+General Cepeda, 1; Carneros, 6800 ft., 6 (BSC); _1 mi. S Carneros,
+6000 ft._, 4; 2 mi. W San Miguel, 5500 ft., 3; 8 mi. N La Ventura,
+6000 ft., 10; La Ventura, 5600 ft, 6 (BSC).
+
+
+
++Cratogeomys castanops planifrons+ Nelson and Goldman
+
+
+1934. _Cratogeomys castanops planifrons_ Nelson and Goldman, Proc.
+ Biol. Soc. Washington, 47:146, June 13, type from Miquihuana,
+ 5000 ft., Tamaulipas (listed, by mistake, as southern Nuevo
+ Leon).
+
+
+_Distribution._--Elevated montane valleys of Sierra Madre Oriental of
+extreme southeastern Coahuila, south and east into southwestern Nuevo
+Leon and Western Tamaulipas (see fig. 1).
+
+
+_Remarks._--Specimens from Coahuila assigned to _planifrons_ compare
+favorably with topotypes of this subspecies although they are
+slightly larger in cranial dimensions (see tables 1 and 2). This
+small subspecies is darker and slightly larger than _subnubilus_ but
+in other ways is most closely related to _subnubilus_. _Cratogeomys c.
+planifrons_ shows little relation to other adjacent subspecies,
+including _tamaulipensis_, _subsimus_ and _rubellus_, all of which are
+considerably larger and paler.
+
+_Cratogeomys castanops planifrons_ is found in both deep and
+shallow soils of the high, open valleys of the Sierra Madre Oriental;
+in Coahuila it was taken at elevations as low as 7200 feet and as high
+as 8700 feet.
+
+
+_Specimens examined._--Total, 50, from: 4 mi. S and 6 mi. E Saltillo,
+7500 ft, 7; 7 mi. S and 4 mi. E Bella Union, 7200 ft., 14; _12 mi. W
+San Antonio de las Alazanas_, 16; _12 mi. S and 2 mi. E Arteaga, 7500
+ft._, 11; 2 mi. E and 2 mi. N San Antonio de las Alazanas, 8700 ft, 2.
+
+
+
+_Transmitted August 23, 1954._
+
+
+
+25-5679
+
+
+
+
+ * * * * *
+
+Transcriber's Notes:
+
+Emphasis Notation:
+ _text_ - italicized
+ +text+ - bold
+ ~text~ - small caps
+
+Possible Typos Corrected
+ Aquanaval => Aguanaval
+
+
+
+
+
+End of the Project Gutenberg EBook of Geographic Variation in the Pocket
+Gopher, Cratogeomys castanops, in Coahuila Mexico, by Robert J. Russell and Rollin H. Baker
+
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