1915.| Matthew and Granger, Lower Eocene Wasatch and Wind River Faunas. 63 
Type, A. M. No. 2691, lower jaws, from the upper beds, “Bridger” of the Huer- 
fano Basin. 
A reéxamination of this specimen suggests that its affinities are close 
with A. stnosus. It is somewhat smaller and less robust, and is recorded as 
from a later level, associated with Ttllotherium. For these reasons it is 
better retained for the present as a distinct species. 
Patriofelis (Protopsalis). 
Protopsalts is transitional from Oxyena to Patriofelis proper, but is in all 
respects more like the Bridger genus, despite its retention of a small heel on 
my. It has not usually been considered as deserving of generic separation. 
Patriofelis tigrinus (Cope 1880). 
Protopsalis tigrinus Cope 1880, Amer. Nat., Vol. XIV, p. 745; 1885, Tertiary 
Vertebrata, p. 322, pl. xxvb, figs. 1-7; (Patriofelis) WorRTMAN 1894, Bull. A. M.N.H., 
Vol. VI, p. 180; Ossorn, 1900, tbid., Vol. XIII, p. 278, fig. 7. 
_ Type, A. M. No. 4805, part of lower jaw and a few fragments of skeleton, from 
the Lost Cabin horizon in the Wind River Basin, Wyoming. 
Two fragmentary specimens from the same horizon as the type, Nos. 
14778-9, were secured by the Expedition of 1909 in the Wind River basin. 
As in the type, the second lower molar has a vestigial metaconid, and small 
but distinct heel. P, is massive, with strong anterior cusp and broad heel 
cusp, P* has a strong anteroexternal cusp and the deuterocone is less 
extended inwardly than in Oxyena. In all these features the teeth agree 
with Patriofelis. 
Dipsalidictis gen. nov. 
Type, D. platypus, infra. 
Generic Distinctions: deuterocone on p* only; m? transverse, unreduced, m 
absent; m, and m, subequal, tuberculosectorial with large basin heels, m; absent; 
P; one-rooted; antero-external cusp of p* prominent; no fibulo-calcanear facet; 
astragalus with flat wide trochlea, limited anteroposteriorly, inner crest not defined, 
neck short, head wide and flat, not deep. 
This genus has the dentition much as in Limnocyon; but the tarsus 1s 
more platyarthran than in Oxyena or Patriofelis, much more than in Lim- 
nocyon. The dentition differs from that of Limnocyon only in the one- 
rooted first premolar and distinct protostyle, and except for the very marked 
