242 



University of California Publications. [Geology 



CANIS(?) DAVISI, n. sp. 

 Type specimen, no. 545, Univ. Calif. Col. Vert. Palae. Mas- 

 call (?) beds near Rattlesnake Creek, John Day Valley, Oregon, 

 figured and described without specific designation by J. C. Mer- 

 riam, Univ. Calif. Publ. Bull. Dept. Geol., vol. 5, pp. 5 and 6, 

 fig. 1. 



A single first upper molar from Thousand Creek (fig. 11) 



13a 



Fig. 11. Canis(l) davisi, n. sp. M 1 . No. 12505, natural size. Thou- 

 sand Creek Beds, Thousand Creek, Nevada. 



Fig. 12. Canis(l), sp. ; near davisi. M 2 , seen from above. No. 12543, 

 X 1%. Thousand Creek Beds, Thousand Creek, Nevada. 



Figs. 13a and 13&. Canis(^), sp.; near davisi. M t . No. 12543, X 1%. 

 Thousand Creek Beds, Thousand Creek, Nevada. Fig. 13a, posterior view; 

 fig. 13b, posterior region of the tooth seen from above. 



shows the same characters as M 1 in the specimen described some 

 years ago from near Rattlesnake Creek, Oregon, and may be 

 referred to that species. 



In the type specimen the molars are a little smaller than in 

 the living coyotes of eastern Oregon and M 2 is relatively a little 

 larger than in the Recent species. The outer cusps of M 1 are 

 laterally compressed to such an extent that the cusps are notice- 

 ably sharp. The protocone together with the incipient proto- 

 conule and metaconule form a wide and sharply-marked V-ridge. 

 The high and narrow hypocone swings forward to a point 

 approximately even with the apex of the protocone. 



The molar tooth from Thousand Creek is almost identical 

 with the type specimen in form. The hypocone of M 1 , which 

 was somewhat worn in the type, is here complete, and shows this 

 tooth to be a little wider transversely than in the original figure 

 of the type specimen. 



