1922] Kellogg: Pinnipeds from Miocene and Pleistocene Deposits 41 



An additional fragment of another femur (fig. 14c) was found 

 at the same locality as the one described. It probably belonged to 

 an older individual, as the epiphysis is firmly ankylosed. This bone 

 comprises the distal portion with condyles which face posteriorly, as 

 in other Otariidae. The condyles are much smaller and less elongated 

 as compared with those of recent Eumetopias. The intercondylar 

 notch is relatively wider, and the patellar groove is narrower and 

 possibly was less expanded. 



Measurements of Femur 



Greatest transverse diameter of femur across condyles .. 78. mm. 



Greatest transverse diameter of outer condyle 26.1 mm. 



Greatest transverse diameter of inner condyle 32.5 mm. 



The most characteristic feature of the astragalus (figs. 16a, 16b) 

 is the absence of the groove on the neck which, in all recent forms, 



Figs. 16a, 16b. Allodesmus kemensis n. gen. and sp. Astragalus, no. 23166, 

 U. C. Pale, coll., X %. Fig. 16a, dorsal view of astragalus; fig. 16b, ventral view 

 of same. Temblor formation near Bakersfield, California. 



separates the articulating surfaces of the head from those of the body. 

 On the whole the astragalus is somewhat smaller than that of Eume- 

 topias, the body is relatively wider, the neck shorter, and the head 

 narrower. Furthermore, the head is somewhat flattened antero- 

 posteriorly and more convex transversely than in the latter, and the 

 neck is twisted so that the long axis of the head is directed obliquely 

 backward internally. In living forms such as Eumetopias the head 

 is considerably longer transversely, but the pit for the attachment of 

 a tendon on the proximal border of the dorsal face is smaller and 

 shallower. 



It is interesting to note that the oval-shaped head does not set so 

 obliquely on the body as it does in recent forms but resembles some- 

 what the type exhibited by Pantolestes. Moreover, the trochlea is 

 wide, extended on the neck, very slightly oblique, and rather limited 



