FOSSIL VERTEBRATES FROM SAN PEDRO VALLEY—GAZIN 505 
form are about the same length but not so slender as those in the 
Hagerman material. The second metatarsal in /#. hillanus appears 
to be relatively small for a cat having a manus of the size indicated. 
The metatarsal as figured is much shorter than in /’. lacustris. 
FELIS sp., near FELIS ATROX Leidy 
FIGURE 45 
Included in the early Pleistocene material are an unassociated 
fourth lower premolar, caleaneum, and proximal portion of a third 
metatarsal, representing a cat of considerable size. The elements are 
much larger than those in modern puma and jaguar skeletons in the 
vollections of the National Museum, and are of the true felid and 
not of the saber-tooth type. Comparison with material of Felis 
atrox, as described and figured by Stock,?’ shows the fourth premolar 
to be about equal in size to those somewhat smaller than average in 
specimens of F. atrow. The calcaneum and metatarsal have propor- 
tions of about two-thirds those of the maximum 
in fF. atrox, being slightly smaller than the 
smallest indicated from Rancho La Brea. In 
this respect the large cat from the Curtis ranch 
horizon appears to be comparable to the form 
in the Cumberland Cave fauna, also considered 
as near /’, atrox. The Cumberland Cave cal- 
caneum, however, is somewhat more robust than 
that from Curtis ranch. 
The lower premolar (fig. 45) is much larger 
than P, in a lower jaw from the Pleistocene of 
Florida referred to Felis veronis,?® and conse- 
quently larger than would be expected in Felis 
angustus,” inasmuch as the upper carnassials in 
the types of these are of about the same size. 
Vy 
aS 
——— 
Order RODENTIA ‘ 
Figure 45.—Felis  sp., 
CITELLUS COCHISEI Gidley near Ff. airox Leidy: 
Fourth lower premolar 
(U.S.N.M. No.12865), 
In the collection from Gidley’s rodent locality —[ureral and occlusal 
isa right maxillary portion of a ground squirrel views. Xl. Curtis 
with all the cheek teeth, except for a part of P’. cra eistocene, 
The upper dentition was made the type, No. 
27 J. C. Merriam and Chester Stock, Carnegie Inst. Washington Publ. 422, pp. i-xvi, 1-231, 
1932. 
230. P. Hay, Proc. U. S. Nat. Mus., vol. 56, pp. 108-109, 1919. 
29 Joseph Leidy, Proc. Acad. Nat. Sci. Philadelphia, 1872, p. 39. 
