1915.] Matthew and Granger, Lower Eocene Wasatch and Wind River Faunas. 439 
to this species, a jaw fragment, No. 16298, with me_3 from the lower 
(Almagre) beds. In the Lysite and upper levels of the Gray Bull beds in 
Wyoming the common form of Pelycodus is indistinguishable from P. 
jarrow. Some forty specimens are referable from the upper Gray Bull, 
LY, es 
g Lf 4 
ae tp - - if 
[s, Z ic 
y, 
VO. SE OVE 
Aq. 
<I 
Fig. 10. Pelycodus jarrovii, lower jaw of neotype, inner and crown views. Upper Gray 
Bull beds, Bighorn basin, Wyoming. 
ten or twelve from the Lysite of the Bighorn, and two or three from the 
Lysite of Wind River basin. In the absence of adequate topotypes I 
designate as neotype No. 15018, associated upper and lower jaws from the 
upper Gray Bull, Head of Dorsey Creek, Bighorn basin. 
The species is confined to these upper levels, except for a single specimen, 
No. 15029, recorded as from 5 miles south of Otto, which would bring it 
low down in the Gray Bull. 
Pelycodus frugivorus Cope. 
Pelycodus frugivorus Corr, 1875, Syst. Cat. Eoc. Vert. New Mex., p. 14; 
(Tomitherium) 1877, Ext. Vert. New Mex., p. 144, pl. xxxix, fig. 16; 1885, Tert. 
Vert., p. 230 (Bighorn specimens only). 
The type of P. frugivorus is a jaw fragment with m-3 from the New 
Mexican Wasatch, horizon unknown. There are several parts of Jaws in 
our New Mexican collections which agree well enough in size and characters 
with Cope’s figures and description, but they vary considerably among 
themselves, and some are trom the lower, some from the upper horizon. 
No. 16209, a jaw fragment with mo-s, from the upper beds agrees most 
