466 The Lemuroidea and the Insectivora of the [May, 
the true monkeys in character, being quadrituberculate. The 
last premolar is quite different, having a compressed, simple, cut- 
ting crown. The ca- 
nine is quite small, and 
there is no diastema. 
The evidence furnished 
by this jaw was hap- 
pily supplemented by 
the discovery, at a later 
day, of an almost en- 
tire cranium of a close- 
allied species in the 
= ] 
G, Tf. —Anaptomorphus amulus Cope, ifs ra 3 
of mandible, twice natural size, linear; 4, inne > Wasatch beds of Wy 
c, from above be 
om ; d, from below. From Bridger ‘bed of oming by Mr. J. L. 
Tonni. Origina al. Wortman. The spe- 
cies it indicated is rather larger than the A. emulus, and I gave it 
the name of A. homunculus (Fig. 12). 
The characters of this genus now known warrant us in thinking 
it one of the most interesting of Eocene Mammalia. Two spe- 
cial characters confirm the reference to the Lemuroidea which its 
Fic. 12.—Anaptomorphus homunculus, skull, natural size except Fig. d which is 
one-half larger than nature, from the Wasatch beds of the Big Horn, Wyoming. 
re. a, right side of skull; 4, oblique view of same showing outline of cerebral 
emis 
ey Ters.. 111, F. V. Hayden mpide 
physiognomy suggests. These are the external position of the 
