462 



University of California Publications in Geology [Vol. 11 



Measurements — ( Continued ) 



No. 21575 No. 21574 



Width Width ' Width Width 



proximal distal proximal distal 



Costal bone 1 



Costal bone 2 14.2 mm. 45.8 32 9.3-- 



Costal bone 3 32.6 16 56 15 



Costal bone 4 14.2 45.5 31 79.5 



Costal bone 5 30 11.2 



Costal bone 6 16 37 



Costal bone 7 13.2 



Anteroposterior diameter 

 on median line 

 



No. 21575 No. 21574 



Epiplastrals 19.5 



Entoplastron 44 73 



Hyoplastrals 53.2 93 



Hypoplastrals 44.8 70 



Xiphiplastrals 48.7 82 



Gular scute 35.6 . .... • 



Humeral scute 37.7 74 



Pectoral scute 27 46.5 



Abdominal scute 48.6 81.5 



Femoral scute 35 46.5 



Anal scute 28 50 



a, approximate. 



AVES 



Very fragmentary remains of birds from the Barstow beds are 

 determined by Dr. L. H. Miller as follows : 



Tarsometatarsus of buteonid hawk, as nearly as determinable. Size 

 larger than Buteo boreali-s, locality 2056 ; tibiotarsus, unmistakably 

 Buteo, but size between B. borealis and B. swainsoni, locality 2061 ; 

 femur, too fragmentary for determination, may belong with preced- 

 ing, locality 2061. 



CARNIVORA 

 CANID (CANIS?), sp. small 



A fragment of a mandible, no. 19463, represents a small canid 

 form evidently quite distinct from the Aelurodon and Tephrocyon 

 species to which reference is made below. The mandible (fig. 9, 

 p. 464) is small and slender, representing a form about as large as a 

 fox. The dentition is not preserved. 



TEPHROCYON, near TEMERARIUS (Leidy) 



The typical material of this species consisted of a piece of a lower 

 jaw containing the carnassial tooth, and a portion of an upper jaw 

 with two teeth both badly preserved. This material was obtained 



