1915.] Matthew and Granger, Lower Eocene Wasatch and Wind River Faunas. 441 
No. 16852 
A.M. 
Fig.13. Pelycodus frugivorus, calcaneum, astragalus and entocuneiform of the right side, 
all front views. Found associated with lower jaw, No. 16852 (Fig. 12). Upper Gray Bull 
beds, Bighorn basin, Wyoming. 
the Lysite and Upper Gray Bull in which the 
lower molars are from 14-16 mm. In these 
specimens the inner cusp of pz is strong, the 
tooth stout and oval; the hypocone is present 
on m2 but varies from obscure to distinct. 
In these and other features it agrees with P. We 14). Poljeots Mrmcoorie. 
jarrovii; I can find no distinctions except the Upper teeth, crown view. Upper 
: ie Gray Bull beds, Bighorn basin, 
smaller size and less robust proportions. Wyoming. 
Pelycodus tutus (Cope). 
Tomitherium tutum Corr, 1877, Ext. Vert. New Mex., p. 141, pl. xxxix, fig. 19. 
Not pl. xl, figs. 16-25. Not Pelycodus tutus Corr, 1885, Tert. Vert., p. 228, pl. xxva, 
figs. 1-3. 
Type, a lower jaw fragment with m2_; from the New Mexican Wasatch. 
Distinctive characters: Mi-3=19 mm. Entoconid placed more anteriorly than 
in other species and connected by a crest with the metaconid. 
This species is clearly distinguished from any other by the characters 
cited. Nos. 16205-7, lower jaws from the upper horizon (one from the © 
top of the lower beds) of the New Mexican beds are referred here. The 
species has not been found in Wyoming and its upper teeth are unknown. 
Notharctus Leidy 1870. 
Type, N. tenebrosus from the Lower Bridger, Wyoming. 
Distinctive characters: Hypocone prominent, well distinguished from protocone 
and more or less nearly equal to it; mesostyle clearly distinct. 
