168 SPECIMENS OF PINNIPEDIA. 



Family II. OTARUDM. 



Ear with a small pointed pinna ; testes in a scrotum. 

 Canines large but not developed into tusks. Hind 

 feet supporting the body, with toes turned forwards, 

 can be used in terrestrial locomotion; palms and 

 soles not hairy ; nails on dorsum of toes. Skull 

 with orbital processes and an alisphenoid canal ; 

 inner wall of orbit defective ; anterior nares not 

 quite terminal ; astragalus without a calcanear pro- 

 cess. The specimens are described in the Challenger 

 Reports, part Ixviii. 



I. OTARIA. (Ot.) 



Otaria, Peron, Voytuje aux terres austr., ii. 1816. 



Hair stiff and without under fur. Hard palate trun- 

 cated, elongated, almost reaching the hamular ptery- 

 goids, and in transverse line with anterior border of 

 glenoid fossa ; borders of palate raised, its surface 

 deeply concave. Premaxilla articulates with outer 

 border of nasal. Posterior nares contracted. 



(1) Otaria jubata. (Ot. j.) 



(Southern Sea Lion.) 

 Phoca jubata, Forster, Descript. anim., 1775. 

 Otaria leonina. Gray, British Mus. Gat., 1866. 



Length about 7 feet. Colour of hair dark brown 

 when skin is wet, lighter brown when dry. Last 

 upper molar immediately behind posterior border of 

 zygomatic root of maxilla. Mandible with massive 

 subcondyloid process inflected inwards ; lower border 

 of body everted. Vertebral formula C-D^gL.S^Cdg 

 = 39. South Atlantic and South Pacific. 



1. Skull, with mandible, adult male. Length in straight line 



14 J inches, over vertex 20 inches ; breadth 9 ^ inches. 

 Hard palate 9| inches long, surface very deep. Pre- 

 maxilla fused with superior maxilla. Mandible 11 



inches long. Dentition : in. ^ - , c. - , post-c. ^ ^ . 



West Falkland Islands. Cliallenger Collection. 



2. Skull, adult male, no mandible. Premaxilla not fused 



with superior maxilla. Length 14|, over vertex 19 



