1915.] Matthew and Granger, Lower Eocene Wasatch and Wind River Faunas. AT 
The geologic level of these species is as follows: 
Wyoming | New Mexico 
Lost Cabin — O. pardalis Go cuciram aRaMEN eer on) a 
MARES TEE IIE 2 fee jincits. v <A dm: Julissa om aR O. lupina Largo 
Lysite O. forcipata? Piinagce nao allot th See 
| ; | O. forei ? } 
Gray Bull O. forcipata, O. gulo. gee Ae ek 
Sand Coulée QO. transiens 
Clark Fork O. equidens, O. sp. in- 
nom. 
?Oxyena sp. innom. 
To this genus should perhaps be referred No. 16068, fragmentary upper 
jaws, etc., from the Clark Fork horizon. The teeth differ from those of O. 
forcipata in greater transverse extension of p* and approach Paleonactis in 
cusp construction. The specimen is too fragmentary for positive reference, 
but is evidently a larger animal than either O. forcepata or P. occidentalis. 
The canines are extremely robust, and much larger than in Oxyena and the 
reference to this genus is very questionable. 
Oxyena equidens sp. nov. 
Type, No. 16070, lower teeth of one individual from Clark Fork beds of Clark 
Fork Basin, Wyoming. é 
Distinctive characters: Trigonids of lower molars wider than long; m1-2 subequal . 
in size; heels relatively large; ps very robust with minute anterior basal cusp; 
canine robust with massive root. Size about that of O. gulo. 
Oxyzna transiens sp. nov. 
Type, No. 16118, upper and lower jaws from the Sand Coulée horizon, Clark 
Fork Basin, Wyoming. | 
Distinctive characters: (1) trigonids of lower molars wider than long; (2) my 
smaller than m2; (3) premolars less robust than in equidens, canine less massive; 
(4) metastyle of upper carnassial less extended than in any of the later species; 
(5) deuterocone of p4 without posterior flange; (6) p* with internal root but no distinct 
internal cusp (deuterocone). 
Characters 1, 4, 5, and 6 are distinctive from all the later species and in agreement 
with observed or inferential characters of O. equidens; nos. 2 and 3 distinguish it 
from that species and are in accord with the later species. | 
Size smaller than O..gulo. 
