52 pnociD,*:. 



to say, in a series of skulls of different ages from the young to the 

 adult, of a Seal of the allied genus Otaria (0. leonina). 



The skin is so like that of Arctocephalus nhjrescens, that we were 

 induced to regard it as a second specimen of that species before we re- 

 ceived the skull. But the skuU of the original specimen of that Seal 

 shows that the adult animal and skull are not nearly half the size of 

 the animal and skull of the Loho marino of Monterey. 



4. Arctocephalus nigrescens. 



Skull broad ; face rather elongate ; palate slightly concave, flat 

 behind, hinder aperture narrow, with a nearly straight hinder edge. 



Arctocephalus nigrescens, Gray, Zool. Erehus 8f Terror, t. . f . , 

 skuU (iuedit.) ; P. Z. S. 1859, 107 & 360. 



Inhab. Falkland Islands ? 



a. SkuU from a half-grown specimen. 



This skull is very like that of A. Delalandii, but differs consider- 

 ably in the form of the front edge of the hinder palatine aperture ; 

 the outer cutting-teeth and the canines are moderately slender, and 

 similar in form, but the latter are much the larger. 



*** Hinder edge of the palate contracted, ovate. 



5. Arctocephalus Delalandii. 



Face of skull rather short ; forehead flattened from nasal bone to 

 the vertex ; palate concave, hinder aperture narrow, with a rather 

 acute, ovate anterior edge; teeth large; lower jaw rather short, 

 strong. Hair rigid, under-fur small in quantity, reddish brown. 



Arctocephalus Delalandii, Gratj, P. Z. S. 1859, 107. t. 69 (skull), p. 369. 

 Otaria ?eronii, A. Smith, S. Afr. Quart. Joiirn. ii. 62. 



Adult. 



Otaria Delalandii, F. Ciivier, Diet. Sci. Nat. xxxix. 423 ; Cuoier, Oss. 



Foss. V. 220. t. 18. f. 15 (skull). 

 Phoca pusilla (part.), Fischer, JSyn. 3Iamm. 232. 



Junior ? 



Le petit Phoque, Buffon, Hist. Nat. xiii. 341. t. 63. 



Little Seal, Penn. Quad. 243, from Buffon. 



Plioca parva, Bodd. Flench. 78, from Buffon. 



Phoca pusilla, Schreb. Sduf/eth. 314. t. 85, from Buffon. 



Otaria pusilla, Dcs7n. N I)ict. xxv. 600. 



Otaria Peronii, Desm. Mamm. 250, 382; Encyc. Method, t. 111. f. 2, 



from Buffon. 

 Loup mario, Par/es, Voy. aid. du Monde, ii. 32. 



Inhab. Cape of Good Hope. 



a. Adult : stufted. Cape of Good Hope. 

 h. Skulls : adult. Cape of Good Hope. 



Q, Skin of young Avith the iinder-lur dark brown. Cape of (Jood 

 Hope ? 



