EUMETOPIAS — ARCTOCEPHALUS. 173 



The presence of a large species of Eared Hair Seal on 

 the Auckland Islands was established by Mr J. W. 

 Clark (P. Z. S., 1873), who identified it with the 

 skulls collected by Sir J. C. Ross in his voyage to the 

 Antarctic, which were named Arctocephalus hookeri 

 by Dr Gray. The skull is distinguished by its great 

 length in relation to both the zygomatic and cranial 

 breadth. The hard palate is almost truncated, but 

 ends behind about opposite the middle of the zygo- 

 matic arch and well in front of the hamular pterygoids. 

 No specimen in Museum. 



III. ARCTOCEPHALUS. (Arc.) 



Arctocephalus, F. Cuvier, Mem. du Museum, xi., 1824 ; and 

 Diet. d. Sc. Nat, xxxix., 1827. 



Thick under-fur ; ears relatively long ; facial part of 



skull short, broad, w^ith nares almost vertical in one 



species, in others elongated and pointed, with nares 



oblique ; hard palate ends well in front of the 



hamular pterygoids, posterior border deeply concave ; 



6 6 

 post-canines — -, large central cusp, small anterior 



D O 



and posterior cusp not always present. External 

 characters, skeletons, and skulls of several species 

 of Fur Seals were described by Sir W. Turner in 

 Chcdlenger Reports, part Ixviii., 1887. 



(1) Akctocephalus ursinus. (Arc. ur.) 



(Fur Seal of North Pacific, the Alaskan Fur Seal.) 



Ursus marinus, Steller, Nov. Coiiivi. Acad. Petrop., ii., 1751. 

 Phoca ursina, Linncmis, Syst. Nat., I., 1758. 

 Callorhinus ursinus. Gray, Proc Zool. Soc. London, 1859 ; and 

 Allen, North American Pinnipeds, 1880. 



Anterior nares almost terminal, nearly vertical ; front 

 of face short, truncated, relatively broad ; short 

 nasals sloping downwards. These appearances are 

 peculiar, and induced Dr Gray to make this species 

 a new genus, Callorhinus, with wdiich Mr Allen 



coincides. Teeth : molars - - , small, one large cusp ; 



o o 



lower molars in addition a small anterior cusp, no 



diastema ; 5th upper molar in line with posterior 



