236 On the Skulls of Sea-Bears and Sea-Lions. 



The two adult skulls in the British Museum differ greatly in 

 the width of the hinder nasal opening, in the form of the hinder 

 lower lateral processes of the occipital bone, in the form of the 

 back of that bone, and in the shape of the condyles. 



** The fourth, fifth, and sixth upper grinders with two distinct diverging 

 roots ; the fifth in a line with the hinder edge of the zygomatic arch. 

 Euotaria. (America.) 



2. Arctocephalm nigrescens, Gray, Cat. Seals & Whales, p. 52. 



The Southern Fur-Seal. 



Hab. Falkland Islands ? 



The two skulls of this species in the British Museum agree 

 in most particulars ; but they differ considerably in the form of 

 the hinder nostrils. The larger one is without its upper teeth, 

 but the form of the roots are well exhibited by their sockets ; 

 the front edge of the hinder nasal opening is produced rather 

 further forward, and is acutely angular. The other skull, which 

 is rather small and has the teeth in a good condition, has the 

 hinder nasal opening with a slightly arched, nearly truncated, 

 front edge. 



Dr. Peters refers Phoca Falklandica (Shaw, Zool. i. p. 256) and 

 Otaria Falklandica (Hamilton, Ann. & Mag.N.H. 1839, p.81,t.4; 

 Jardine, Nat. Lib. vi. p. 271, t. 25) to this species. But as neither 

 Dr. Shaw nor Dr. Hamilton describes the number or position of 

 the teeth, it is not possible to determine if this is the Fur-Seal 

 of the sealers, collected at the Falkland Islands, more especially 

 as the fact of the skull coming from the Falkland Islands is not 

 well ascertained. See the other synonyma which have been 

 established on the sealers' descriptions and figures or the skins 

 collected for the furriers at the Falkland Islands (Gray, Cat. of 

 Seals & Whales, pp. 55, 56). Dr. Hamilton, who prides himself 

 on his figure, represents the hind legs as extended behind ; but 

 they look very awkward in that position, the stuffer having 

 evidently had a difficulty in extending them. 



*** Fourth, fifth, and sixth upper grinders with two diverging roots; the 

 fifth upper grinder entirely behind the hinder edge of the zygomatic 

 arch. The palate narrow. Gypsophoca. (Australia.) 



3. Arctocephalus cinereus, Gray, Cat. Seals & Whales, p. 56. 



Australian Fur-Seal. 



Otaria cinerea, Peron?; Quoy & Gaimard, Voy. Astrol. p. 89, t. 12, 13, 16 



(animal and skull) ; Peters, Monatsb. 1866, p. 272. 

 Arctocephalus nigrescens, b &i c, Gerrard, Cat. Bones B. M. p. 147. 

 Black Seal, Otaria, Cat. Sydney Museum, ii. p. 36. 



Hab. Australia. John Macgillivray. 



Black, greyer beneath ; under-fur abundant, reddish brown. 



There are the stuffed skin, with its skull, and the bones of the 



