[TABLE 1.] Measurements of Adult Female Cratogeomys from
Coahuila, México
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 Acuña |
| 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, México
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 Acuña |
| 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 Torreón |
| 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.