1918] 



Stock: The Pleistocene Fauna of Hawver Cave 



483 



Judging from the wear to which the teeth have been subjected, 

 no. 10636 belongs to a fully matured individual. The Hawver Cave 

 specimen lies within the range of skull size of the Recent F. o. orcgon- 

 ensis. P 5 and M x are relatively heavy in the former specimen. 



Measurements of no. 10636 



P§, greatest anteroposterior diameter : 12 mm. 



P§, greatest width 7 



Pj, greatest anteroposterior diameters 14.7 



Pj, greatest width 8.3 



Mi, greatest anteroposterior diameter 17 



Mj, greatest width 9 



Depth of ramus behind mj, measured normal to inferior 



border 22.7 



Height of ramus from angle to coronoid 57.8 



Distance from posterior end of m; to posterior end of 



condyle 51.2 



FELIS, probably n. sp. 



The larger of the two types of pumas from Hawver Cave resembles 

 closely the Recent Felis orcgonensis hippolestcs. In so far as struc- 

 tures can be compared, it also bears a close similarity to the Pleisto- 

 cene forms from Potter Creek Cave and Samwel Cave. Specimens 

 from the latter localities have been referred to the Recent F. o. hippo- 

 lestcs. A fairly well preserved skull without mandible from Samwel 

 Cave furnishes perhaps the best material from the fissure deposits of 

 California representing a form near the F. hippolestcs type. 



A portion of a skull, no. 19921, from Hawver Cave, agrees very 

 closely with the corresponding part in the Samwel Cave skull. In this 

 specimen the infraorbital foramen resembles in size that in the 

 Samwel Cave skull, and is relatively much smaller than in skulls 

 of F. o. orcgonensis. The postorbital process of the frontal is some- 

 what stouter in the Hawver Cave specimen. 



In no. 19921 the teeth are larger and heavier than in skulls of 

 F . o. orcgonensis. The upper carnassial in the Hawver Cave frag- 

 ment approximates the corresponding tooth of the Samwel Cave 

 specimen in maximum length of crown. It exceeds in this measure 

 the carnassials in male individuals of the Recent F . o. hippolestcs. 

 According to C. Hart Merriam, 15 in Recent specimens P 4 varies in 

 length of crown from 23 mm. to 25 mm. (mean 24) in males, and 

 from 20.2 mm. to 22.5 mm. (mean 21.6) in females. 



is Merriam, C. H., Preliminary revision of the pumas (Felis concolor group), 

 Proc. Wash. Acad. Sci., vol. 3, p. 588, 1901. 



