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University of California Publications in Geology [Vol. 10 



The mandible of the fossil species as represented by specimens 

 10637 and 19915 is larger and C, P4 and M r are heavier than in the 

 Recent California puma. P 5 and M T are heavier than the correspond- 

 ing teeth in lower jaws nos. 3819 and 3744 from Potter Creek Cave. 

 The Hawver Cave specimens are referable possibly to male individuals. 



A satisfactory comparison with the large puma known from 

 Rancho La Brea 16 on basis of skull material can as yet not be made, 

 as the latter form is known only by a portion of the jaw almost 

 entirely absent in the Hawver Cave specimens. The width of the 

 ramus just anterior to the masseteric fossa is approximately the same 

 in both forms. 



Measurements of Dentition 



No. 19921 



P-, anteroposterior diameter 17.4 mm. 



P-, greatest transverse diameter 9.3 



P 1 , anteroposterior diameter 25.8 



P 1 , transverse diameter 12.3 



No. 19915 



Mj, anteroposterior diameter 19.2 



No. 10637 



My, anteroposterior diameter 19.2 



Several metapodials are apparently to be associated with the skull 

 material of the larger cat from Hawver Cave. 



Metacarpal 5 resembles very closely the corresponding element in 

 the California puma. In both forms, the tuberosity of the proximal 

 end is less prominent than in Felis atrox and in F. leo. The lateral 

 tuberosity is flattened, while in the African lion and in the large lion 

 from Rancho La Brea it is rounded. At a distance from the proximal 

 end equal to three-fourths of the total length of the metacarpal, a 

 small tubercle is situated on the posterior side of the shaft. This is 

 present also in the fifth metacarpal of Felis oregonensis oregonensis, 

 but is absent in F. atrox and in F. leo. 



Metatarsal 2, as represented by no. 11019 from Hawver Cave 

 (fig. 5), is noticeably longer and somewhat heavier than the corre- 

 sponding element of F. 0. oregonensis. A second specimen, no. 21470, 

 approaches more nearly the size seen in the Recent California puma. 

 It is possible that the latter element belongs to the smaller of the 



1(5 Merriam, J. C, Recent discoveries of carnivora in the Pleistocene of Rancho 

 La Brea, Univ. Calif. Publ., Bull. Dept. Geol., vol. 7, pp. 42-46, fig. 4, 1912. 



