HETEROMYS. 375 



g. Above mixed grizzled rufous and orange. PAGE 



a/ Size small H. pictus 377 



b.' Size large H. p. restrains 378 



h. Above pale grizzled rufous H. p. isthmius 378 



B. Soles 6-tuberculate. 



a. Above grizzled brownish fulvous H. parviceps 378 



b. Above mixed grayish drab and fulvous H. sonorana 379 



c. Above mixed black and fulvous H. veracrucis 379 



d. Above mixed black fulvous and whitish H. obscurus 379 



e. Above drab brown, mixed with black and 



pale fulvous H. ph&ura 379 



f. Above dark brown and fulvous H. orbitalis 380 



g. Above gray, sprinkled with white H. crispus 380 



h. Above darker gray in color H. c. setosus 380 



i. Above dark drab brown, grizzled with black 



and ferrugineous H. heterothrix 380 



j. Above blackish brown, reddish or gray H. paralius 381 



387. albolimbatus (Heteromys), Gray, Proc. Zool. Soc., 1868, p. 205. 

 GRAY'S SPINY MOUSE. 



Type locality. La Parada, State of Oaxaca, Mexico. 



Geogr. Distr. State of Oaxaca, Mexico. 



Genl. Char. Edges of ears and tip of tail white ; tail long as body 



Color. Above mixed gray, black, and yellow; lateral line buff 

 saddle conspicuous; rump gray; under parts and feet white; tai 

 above blackish brown, beneath white. 



Measurements. Total length, 207-226; tail vertebrae, 108-113; 

 hind foot, 25-28. Skull: occipito-nasal length, 29.5; Hensel, 20; 

 zygomatic width, 14; interorbital constriction, 7.5; length of nasals, 

 10.5; length of upper molar series, 5; length of mandibles, 13; length 

 of lower tooth row, 5. 



388. canus (Liomys), Merr., Proc. Biol. Soc. Wash., xv, 1902, p. 44. 

 HOARY SPINY MOUSE. 



Type locality. Parral, State of Chihuahua, Mexico. 



Genl. Char. Size large; hind foot 5-tuberculate. Skull similar to 

 that of H. alleni, but larger and heavier and with broader inter- 

 orbital space. 



Color. Above gray, mixed with pale fulvous, white, and dark 

 gray, lateral line indistinct; under parts, hands, and feet white; tail 

 blackish above, white beneath, tip all dark. 



Measurements. Total length, 276; tail vertebrae, 138; hind 

 foot, 34. 



