HETEROMYS, 375 
g. Above mixed grizzled rufous and orange. PAGE 
Be SETS S12 SA 2 Por ae a a ee H. pictus 377 
ae TEAR ARC RIG, oad Oa Sais seg H. p. rostratus 378 
be Above pale prizzied rufous: 2.6202... 5.. 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 
esavpove mixed black and fulvous.:.....)... H. verecrucis 379 
d. Above mixed black fulvous and whitish..... H. obscurus 379 
e. Above drab brown, mixed with black and 
LL EG ls 00 ae 0 een ee Oene er vice a aie ev H. pheura 379 
f. Above dark brown and fulvous............. H. orbitalis 380 
pe above pray, sprinkled with white............ H. crispus © 380 
Bb. Above datker gray.in color................ H. c. setosus 380 
i. Above dark drab brown, grizzled with black 
MET TONMOO US oc clas cflecks 44 Ail ek Sade ses H. heterothrix 380 
j. Above blackish brown, reddish or gray...... H. paralius 381 
387. albolimbatus (Heteromys), Gray, Proc. Zodl. 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 vertebre, 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. allent, 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 vertebre, 138; hind 
foot, 34. 
