NOTES ON THE CANIDH OF THE WHITE RIVER OLIGOCENE. 361 
but the vertebrae are much larger and the tail is longer and stouter. The tubercular 
molars of both jaws are relatively larger than in the other species. The inferior sectorial 
has a low anterior blade, and the internal cusp of its talon is reduced in size. The hori- 
zontal ramus of the mandible is long and slender and has a nearly straight inferior bor- 
der. White River. 
DAPHENUS HARTSHORNIANUS Cope. 
Daphenus vetus Leidy, Amphicyon vetus Leidy, in part, loc. cit. Canis hartshor- 
nianus Cope, Synopsis New Vert. from Colorado, 1873, p. 9. Ann. Rept. U.S. 
Geolog. Surv. Terrs., 1873, p. 505. Amphicyon hartshornianus Cope, Tertiary 
Vertebrata, p. 896. 
This species is somewhat smaller, and the tubercular molars of both jaws are propor- 
tionately smaller than in the preceding species; the anterior triangle of the lower secto- 
rial is high and acute, and its talon is basin-shaped, with the internal cusp as large as 
the external. The horizontal ramus of the mandible is straight and slender. Both this 
species and the preceding one have been found in the middle division (Oreodon beds) of 
the White River formation, but not as yet, to my knowledge, in the lower (Titanothe- 
riam beds) or the uppermost division (Protoceras beds). 
DaAPHENUS CUSPIGERUS Cope. 
Canis cuspigerus Cope, Proc. Amer. Phil. Soc., 1878, p. 70. Amphicyon entoptychi 
Cope, wid., 1879, p. 872. Amphicyon cuspigerus Cope, Bull. U. S. Geolog. Surv. 
Terrs., Vol. vi, p. 178; Tertiary Vertebrata, p. 898. 
D. cuspigerus is much the smallest known species of the genus. The sagittal crest 
is very short and inconspicuous ; the cranium is fuller and more rounded, the postorbital 
constriction is shallower and more anterior in position than in the White River species, 
and the mandibular ramus is nearly straight and very slender. The inferior sectorial is 
very robust and has a low anterior triangle and basin-shaped heel. John Day stage. 
DAPHENUS FELINUS, sp. nov. 
The inferior dental series of this species slightly exceeds in length that of D. vetus 
and the sectorial is larger. The lower tubercular molars are inserted in the border of 
the ascending ramus of the mandible, and, judging from the alveoli, were reduced in size. 
The horizontal ramus is not much longer, but much heayier than in D. vetus, and has a 
more sinuous ventral border, which rises more beneath the masseteric fossa. The limb 
