Additional records: Rancho Pano Ayuctle (Hooper, 1953:5); Gómez Farías (Goodwin, 1953:1).
Cratogeomys castanops
Yellow-faced Pocket Gopher
Two subspecies of Cratogeomys castanops occur in Tamaulipas, C. c. planifrons in the higher elevations of the Sierra Madre Oriental in the western part of the state, and C. c. tamaulipensis on the plains of the Río Grande.
Specimens from Miquihuana were trapped in tunnels at 6400 feet elevation. At Palmillas, individuals were trapped in an area of mesquite, other bushes and "lechuguilla." Three specimens from southeast of Reynosa were collected in traps set along the dikes of irrigation ditches. Most specimens from Nicolás were brought by natives to the collector, but some were caught in traps set in tunnels among the desert bushes.
Cratogeomys castanops planifrons Nelson and Goldman
1943. Cratogeomys castanops planifrons Nelson and Goldman, Proc. Biol. Soc. Washington, 47:146, June 13, type from Miquihuana, 5000 ft., Tamaulipas.
Distribution in Tamaulipas.—Higher elevations in southwestern part of state.
Specimens from four miles north of Jaumave do not differ from specimens from Miquihuana. The weights of nine females averaged 146.4 (110-210) grams; three males weighed 178, 203, and 215 grams.
Records of occurrence.—Specimens examined, 29: Miquihuana, 6400 ft., 9; 4 mi. N Jaumave, 2500 ft., 5; Nicolás, 56 km. NW Tula, 5500 ft., 15.