374 HETEROMYS. 
Genl. Char. Soles 6-tuberculate; tail half as long as head and 
body. 
Color. Head dark gray; upper parts black, mixed with ochre 
yellow, base of all the hairs white; flat grooved spines, with black 
tips; the stiff hairs with a black ring and reddish yellow tip, these 
last distributed sparingly over the head and rump; tip of nose, lips, 
inner sides of arms and legs and under parts of body white; tail 
above black, beneath white; ears naked on outer side, black on inner. 
Measurements. Total length, 240; tail, 95; hind foot and claw, 30. 
B, Liomys. 
==. P=; M20: 
i % 
Pelage harsh; tail well haired; molars with two parallel trans- 
verse loops, without ‘additional lobes or permanent enamel islands,”’ 
uniting in old animals and forming a horseshoe as in Heteromys. 
Fic. 70. HETEROMYS (LIOMYS) ALBOLIMBATUS. 
No. 8673 Field Columbian Mus. Coll. Nat. size. 
LOWER TOOTH ROW. UPPER TOOTH ROW. 
Enlarged 6 times. Enlarged 6 times. 
KEY TO THE SPEGIES AND! SUBSPECIES OF THE SUBGCE Sas: 
A. Soles 5-tuberculate. PAGE 
a. Above mixed black and yellowish black..H. albolimbatus 375 
b. Above mixed gray and pale fulvous, 7: ae H. canus 375 
es Above: blackish: and\-butiy go>. 2.25 2525 oe H. allent 376 
d. Above grizzled gray. 
ae Dark ““saddle*? on middle of back). 22 = H. torridus 376 
b. INot™ saddle onaniddleof backs. ees H.t. manor 377 
e. Above mixed buff and brownish black........ H. exiguus 377 
{. Above grizzled fulvous and black...... H. plantinarensts 
se) 
~I 
“I 
