252 



University of California Publications. I 



Measurements 



Ulna, no 12552. 



Least anteroposterior diameter behind sigmoid cavity 38.4 mm. 



Anteroposterior diameter measured across the coronoid process.. 63.5 

 Astragalus, no. 11891. 



Greatest anteroposterior diameter 63.5 



Greatest width across the trochlea ' 43. 



Length of neck 24.5 



Astragalus, no. 12548. 



Greatest anteroposterior diameter 60.5 



Greatest width across the trochlea 42. 



Length of neck 21.5 



Metatarsal II, no. 12549. 



Anteroposterior diameter of proximal end 35.8 



Transverse diameter of middle of shaft 16. 



Metatarsal III, no. 12550. 



Anteroposterior diameter of proximal end 40. 



Transverse diameter of shaft immediately below lateral articu- 

 lar faces of proximal end 20.8 



Phalange III, no. 12551. 



Height of phalange from lower side of basal process to summit 

 of core (exclusive of hood) 63.7 



Greatest transverse diameter of middle region of phalange 24.2 



FELIS, sp. b 



A broken astragalus and a middle phalange, no. 12546, from 

 the Thousand Creek region represent a feline species about as 

 large as the existing cougar (see fig. 17). 



Measurements op Astragalus, No. 12546 



Greatest anteroposterior diameter ' 32.8 mm. 



Greatest width across the trochlea 19. 



Occurrence: Thousand Creek Beds; locality 1104. Thousand 

 Creek, Humboldt County, Nevada. 



Rodentia 



The numerous rodent forms in the fauna of Virgin Valley 

 and Thousand Creek have already been described by Miss Louise 

 Kellogg 12 and by Mr. E. L. Furlong. 13 Fifteen species are listed 



Rodent Fauna of the Late Tertiary Beds at Virgin Valley and 

 Thousand Creek Nevada, Univ. Calif. Publ. Bull. Dept. Geol., vol. 5, pp. 

 421-437, 1910. 



"An Aplodont Rodent from the Tertiary of Nevada, Univ. Calif. 

 Publ. Bull. Dept. Geo!., vol. 5, pp. 397-403, 1910. 



