252 



MEMOIRS OF THE UNIVERSITY OF CALIFORNIA. 



In a fragment of a mandible (fig. 32c) accompanying the upper jaw specimen 

 most clearly resembling G. occidentalis, the carnassial shows a metaconid even 

 weaker than that of C. dims, while the entoconid is slightly larger than in 

 average C. dims specimens. On M 2 the protoconid seems slightly smaller and 

 the heel region relatively larger than in G. dims, though the metaconid is small 

 compared with the protoconid. The proportions of the talonid region with 

 reference to the trigonid are much as in C. occidentalis. 



In one of the small specimens (no. 10733) of the C. occidentalis type from 

 Rancho La Brea the hypocone of M 1 is rather small, though larger than in the 

 typical C. dims, and the anterior extension of the hypocone ridge around the 

 anterior side of the protocone is barely interrupted. M 2 is in this specimen 

 of the narrow form with small metacone and hypocone. P 3 differs from the 

 corresponding tooth of C. dirus in being very narrow instead of wide pos- 



33a 



33b 



Figs. 33a and 33b. Canis occidentalis furlongi Merriam, J. C. No. 19792, X %. Fig. 33a, skull superior view; 

 fig. 33b, skull inferior view. Rancho La Brea Beds. 



