428 Thorpe — Some Tertiary Camivora in 



somewhat more robust. The Yale specimens agree with 

 Matthew's determination and are represented by several 

 fragments of rami, chiefly Y. P. M. Nos. 12684 and 12685, 

 from Colorado. The skull is undescribed, unless Leidy's 

 Amphicyon gracilis is considered synonymous. Matthew 

 holds this view and I thoroughly agree with it. 



Cynodictis pater cuius Matthew. 



This species is represented in the Marsh Collection by 

 many specimens of rami, collected between and including 

 Pawnee Buttes, Colorado, and Crow Buttes, South 

 Dakota. The type, No. 9616, A. M. N. EL, was collected 

 in Montana. It apparently is not represented in the John 

 Day fauna, but otherwise its distribution seems to be 

 practically the same as that of C. angustidens. The type 

 horizon is Lower Oligocene in the Titanotherium beds, 

 but I consider that its vertical distribution must include 

 a part of the Middle Oligocene (lower Brule). From 

 the matrix and locality of the Yale specimens, it seems 

 that the majority are from the lower Brule rather than 

 from the Titanotherium beds. 



Y. P. M. No. 12683 has a small posterior cusp on P 2 as 

 in C. oregonensis. It corresponds to the type in other 

 respects. One of the specimens has a double-rooted M 3 

 while the others have but the one. The specific char- 

 acters, as outlined by Matthew, are constant, and thereby 

 afford strong evidence for the validity of the species. 

 However, I can not help feeling that this form may repre- 

 sent the male of C. angustidens. The main distinction 

 between the two is that the former is somewhat more 

 robust. The size of both is about the same. 



Daphoenus vetus Leidy. 



Various localities in Nebraska and Colorado yielded 

 remains of this species to the collectors working under 

 Professor Marsh's direction. An especially well pre- 

 served skull and jaws (Cat. No. 10066, Y.P.M.), from 

 Greeley, Colorado, was figured by J. L. Wortman in 1901 

 in this Journal. Another specimen, collected by Doctor 

 E. L. Troxell in Sioux County, Nebraska, was purchased 

 by Professor Charles Schuchert and by him presented to 



