262 MEMOIRS OF THE CARNEGIE MUSEUM 
than most of their contemporaneous forms and consequently more nearly like the 
old types of the Miacidee from the Eocene formations. 
Canid (Undetermined Species). 
A humerus (No. 2400) of a very large canid, the size of a lion, was found in the 
lower Harrison beds on Whistle Creek, Sioux County, Nebraska, about eight or ten 
Fic. 56. Anterior View of Humerus of Canid. Sp. indt. 4 nat. size. No. 2400. 
miles east of the Agate Spring Fossil Quarries. With the exception of its greater 
size and the greater distal extent of the deltoid ridge this humerus most nearly 
resembles that of Daphewnodon. The bone is very nearly the size of the humerus of 
Amphicyon major of Europe and not unlike the latter, 
so far as comparisons can be made. In the Amer- 
ican species, however, the deltoid ridge extends 
lower down and the anconeal fossa is not so high as 
in the European species. The humerus possibly rep- 
resents some genus closely related to such large forms 
as Dinocyon from the later Tertiary of Montana de- 
scribed by Mr. E. Douglass* or D. (Borophagus) 
gidleyi from the Miocene of Texas described by Dr. 
Fig. 57. Fibular and AnteriorViews W, D. Matthew.% The quarry in which the hu- 
of Calcaneum of Canid sp. indet. 4 nat. 
F merus (fig. 56) was found contains a similar fauna to 
size. No. 2211. 1 
that of the Agate Spring Fossil Quarries. 
A fifth metacarpal (No. 1897) of a large carnivore, which may belong to this 
species, was found by the writer in 1904 among the surface fragments in the quarry, 
which was worked the following years by Professor Barbour (Agate Spring Fossil 
23‘ New Vertebrates from the Montana Tertiary,’? Ann. Car. Mus., Vol. II, p. 192, 1903. 
2A Skull of Dinocyon from the Miocene of Texas,”’ Bull. Amer. Mus., Vol. XVI, p. 129, 1902. 
