690 The Tertiary Marsupialia. 
perhaps in not quite so specialized a condition as at the present 
time. The form of the astragalus shows that the internal digits 
ee pesca Cope; parts of individual on Fig. $ 
two- aun na Fig. 4a, caudal vertebra, front; a’, do., left side; 4 
distal mo pee ‘teak: 6’, pos caine side. Fig. 4¢, ulna, proximal re de 
from above. Fig. 4d, astragalu us, from above; 2’, do., fr pong ce IIL 
from Report U. S. G. Survey Terrs., F. V. Ha yden in chaige, 
are of very reduced size, the first probably wanting, in hid 
todon, and that the external digits were large and constitu 
principal agent in pa 
That the animal had a 
sion. the few 
large tail is proven by 
- caudal vertebre 
(Fig. 42a’). 
- ‘The inferior molars have 
and the penultimate is 
larger than the last one. 
former tooth looks 4 we 
deal like a reduced 
rior molar of some rA 
b - Mastodon. The fam : ie : 
Fic. 5. BE igs fSoliatus Cope ; part of herbivorous habi 
of right mandibular ramus, natural size, Fig. a : 
5a, right side; 4, a do.; c, from above ; d, probab y ae is 
dental ’ 
orange view, show corp em ge Sea of the kangaroos. 
Mexico, Original, from the Report of the covery O 
U.S. Geol, Survey Terrs., F. V. Hayden, nus in ô r Lo 
Vol. mt. ge of the 08! 
he gan 
beds marks an important advance in t 
+ 
(July, 
ws of tu 
but two ro b a 
