314 CRATOGEOMYS. 
310a. estor (Cratogeomys), Merr., Mon. Geomyide, N. Am. Faun., No. 
&, 1805,.0. Esha eee ips. 4, 5. 
Las Vicas Pocket GOPHER. 
Type locality. Las Vigas, State of Vera Cruz, Mexico. Altitude, 
8,000 feet. 
Geogr. Distr. Northeastern foothills of Cofre de Perote and hills 
to the north, State of Vera Cruz, Mexico. 
Genl. Char. Smaller than C. perotensis; small naked nasal pad; 
hind feet and tail hairy. Skull: superior outline nearly straight. 
Color. Apparently there is no difference in the coloration of 
this form and that of C. perotensis, the same description acting 
equally well for both. | 
Measurements. Total length, 315; tail vertebrae, 94; hind foot, 
41. Skull: basal length, 52; Hensel, 47-51; zygomatic width, 38-38.5; 
interorbital width, 7-8; length of upper molar series, 11; length of 
mandible, 37.5—42. 
311. oreocetes (Cratogeomys), Merr., Mon. Geomyide, N. Am. Faun., 
Noe 8, F805) p. Rs6) ple mgs: 1.2. 
MountTAIN GOPHER. 
Type locality. Mount Popocatepetl, State of Mexico, Mexico. 
Altitude, 11,500 feet. 
Geogr. Distr. Higher slopes of Mount Popocatepetl, Mexico. 
Genl. Char. Size large; small nasal pad; tail nearly naked. Skull: 
temporal ridges developed; lambdoid crest present; bulla sub- 
globular; groove on upper incisors on inner side wide; outer side of 
tooth beveled. 
Color. Above dusky, head and middle of back darkest, washed 
with pale brown; brown spot beneath eyes; fore feet dusky; hind 
feet white. 
Measurements. Total length, 318; tail vertebre, 92; hind foot, 
43. Skull: basal length, 51; Hensel, 47; zygomatic width, 32.5; 
interorbital width, 8; length of upper tooth row, 10.5; length of single 
half of mandible, 36. 
312. peregrinus (Cratogeomys), Merr., Mon. Geomyida, N. Am. Faun., 
Nov 8) 18980... 158, pliers. 3: 
Mount IztaccinuaTL Pocket GOPHER. 
Type locality. Mount Iztaccihuatl, State of Mexico, Mexico. 
Altitude, 11,500 feet. 
Geogr. Distr.. Higher slopes of Mount Iztaccihuatl, Mexico. 
Genl. Char. Size medium; fore foot large, claws nearly equaling 
hind foot and claws; nasal pad small. Skull: zygomata broad and 
bowed outward, rostrum short; nasals broad; premaxille broad, 
