1919] Merriam: Tertiary Mammalian Faunas of Mohave Desert 535 



Measurements of No. 22319 



Length anterior side of canine to posterior side of M, 



47.8 nun. 



Pu anteroposterior diameter 



P 2 , anteroposterior diameter 



P 4 , anteroposterior diameter 



M], anteroposterior diameter 



al3 

 4.6 



3.3 

 6.2 

 7.9 



Mi, anteroposterior diameter of heel 



a, approximate. 



143 



141 



Figs. 140a to 143. Canid?, indet. Limb elements, no. 22321, X %. Fig. 140a, 

 scaphoid, dorsal view; fig. 140b, scaphoid, ventral view; fig. 141, metacarpal 5; 

 fig. 142, first phalanx; fig. 143, calcaneum. Eicardo Pliocene, Mohave Desert, 

 California. 



Type specimen, an upper jaw with P 4 , M 1 , M 2 , and a portion of P 3 , no. 21507, 

 from locality 2281 in the upper portion of the Eicardo beds in the Western 

 El Paso Eange, California. 



This specimen (figs. 144«, 1446) represents a very large camel with 

 heavy crushing teeth. 



M 1 is large with heavy protocone, and only moderately developed 

 protoconule ridge. M 2 is a heavy tooth with large protocone ridge. 

 This tooth seems larger than in most specimens referred to Aelurodon. 



P 4 is a heavy tooth with much reduced deuterocone. The proto- 

 cone and tritocone are broken so that the form can not be clearly 

 seen. When the type specimen was first examined by the writer, 

 shallow external and internal grooves on the anterior region of the 

 protocone seemed to show the separation of a well marked protostyle. 

 In preparation of this tooth for study the region of the carnassial 

 was damaged somewhat, and the grooves separating the protostyle 

 region are no longer apparent. The construction of the anterior por- 

 tion of the tooth is, however, much as in upper carnassials possessing 

 an anterior style. 



The portion of P 3 present shows that this was a heavy tooth. 



AELUEODON ? APHOBUS, n. sp. 



