1885.] Eocene Period of North America. 463 
end of the radius is: still 
more different from that of 
Nasua,and resembles close- 
ly that of monkeys of the 
genus Semnopithecus. 
We have, then, an ani- 
mal with a long thigh free 
from the body, a manus 
capable of complete pro- 
nation and supination, and 
details of lower jaw an 
teeth quite similar to those 
of the lower monkeys. The 
form of the humerus and 
its relative length to the 
femur are quite as marked 
as in some of the lemurs. 
The most marked differ- 
ence is seen in the increased 
number of teeth; but in 
this point it relates itself to 
the other Quadrumana, as 
the most ancient types oO 
Carnivora and Ungulates 
do to the more modern, 
This genus is allied to 
Adapis Cuvier, of the 
French Eocene (Fig. 8), 
but differs in the posses- 
sion of but two incisors on 
each side; in Adapis there 
are three, according to Fil- 
hol. From that genus and 
Opisthotomus, it differs 
in the structure of 
the last inferior molar, as 
exhibited in the analytical 
ie 
There are several species 
of Tomitherium, but the 
Fic. 7.— — Tomitherium KAE ope, part 
animal figured in Figs. 
a, ilium inner si 
posterior 
ig. 
ide; å, femur path Se do. 
