358 



I may mention that we have well-developed adult skulls of the 

 following species, which have been compared with the one here de- 

 scribed : — 



Arctocephalus delalandii, from the Cape, figured Proc. Zool. Soc- 

 1854, t. 69. 



Arctocephalus lobatus, from xlustralia. 

 Arctocephalus gillespii, from California, I. c. t. 70. 

 Arctocephalus ursinus, from Behring's Straits, I. c. t. 68. 

 Arctocephalus nigrescens, from Falkland Islands 1 



The only one that nearly approaches it in size is that of the very 

 old Arctocephalus lobatus from Australia ; but this skull is at once 

 known from that of the Monterey Sea-lion by having a rather deeply 

 concave palate, much narrowed behind, and with a semicircular edge 

 to the hinder palatine opening ; while in the Monterey Sea-lion the 

 palate is nearly flat, slightly concave in front, and not so contracted 

 behind, and with a transverse hinder margin to the posterior opening. 



The Monterey species is very distinct from A. gillespii, also from 

 California, which, beside being very much smaller, not more than one- 

 third of the size, has a much narrower skull with a longer face, and 

 a very different form to the hinder palatine opening. 



I refer the species to the third section, as defined in my previous 

 paper in the Proceedings of the Zoological Society, 1859, p. 109, and 

 propose to designate it by the name of 



Arctocephalus monteriensis. (PI. LXXIL, skull.) 



Face rather short ; palate rather concave in front, nearly flat 

 behind, the hinder aperture rather contracted, with a nearly straight 

 transverse hinder edge. Teeth large ; the lower jaw rather elon- 

 gate. 



Hab. California (Monterey). Called Lobo marino by the Spa- 

 niards. 



If the skin sent last year by Mr. Taylor to Mr. Gurney, and by 

 that gentleman presented to the Museum, is the young of this 

 species, the young animal is blackish, silvered by the short white tips 

 to the short black hairs ; those on the nape and sides of the hinder 

 part of the body having longer white tips, making those parts whiter 

 and more silvery. The under fur is very abundant, reaching nearly 

 to the end of the hair. The end of the nose and sides of the face 

 are whitish. The whiskers are elongate, rigid, smooth and white. 

 The hind feet are elongate, with rather long flaps to the toes. The 

 skull is very small for the size of the skin, and I should have doubted 

 its belonging to the skin if it were not accompanied by the following 

 label: 



" Skull of the Fur- Seal I sent last year. It is very imperfect, 

 from my forgetting where I had put it ; but it must do until acci- 

 dent throws another in the way ; the other bones were lost. — 

 A, S. T." 



It is the skull of quite a young animal, with what I am induced 

 to believe are its milk teeth, and, like the young skulls of most of 

 the species of this genus, is very unlike the adult form. It also 



