HETEROMYS, 375 
g. Above mixed grizzled rufous and orange. PAGE 
GSO, Re Gece. Ua H. pictus 377 
ee nS sc. a HI. p. rostratus 378 
h. ABOMweepale grigmipammutous..)...5....)... H. p..1sthmius 378 
B. Soles 6-tuberculate. 
a. Above grizzled brownish fulvous............ H. parviceps 378 
b. Above mixed grayish drab and fulvous...... H. sonorana 379 
C.wameve mixed blaeieand fulvous......7ee.. Hl. verecrucis 379 
d. Above mixed black fulvous and whitish..... H. obscurus 379 
e. Above drab brown, mixed with black and 
MeweatULVOUS geminata... ok ea H. pheura 379 
feeapove dark browgeand) dulvous.......4,.5.5 H. orbitalis 380 
g. Above gray, sprinkled with white............ H. crispus 380 
leeepove darker ofay in @olot.).... 1...) un. . H.c¢. setosus 380 
i. Above dark drab brown, grizzled with black 
Bian ferrugingous sme eras. . . Ree weyers». FH. heterothrix 380 
j. Above blackish brown, reddish or gray...... H. paralius 381 
387. albolimbatus (Heteromys), Gray, Proc. Zoél. 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. 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 vertebre, 138; hind 
foot, 34. 
