48 pnociDiE. 



Ai-ctocephalus, Gray, P. Z. S. 1859, 358. 



Arctoceplialus (Aretocephale), F. Cuvier, 3Ihn. Mus. xi. 205. t. 15. 



f. 1 ; Diet. Set. Nat. lix. 403, 1829 ; Fischer, Si/n. 230 ; Gray, Zool. 



Erehus 8f Terror ; Turner, P. Z. S. 1848, 88. 

 Otaria, sp., Peron; Xilsson. 



Dr. J. Miiller (Wiegm. Arch. 1841, p. 333) described two species, 

 Otaria Chilensis, and Arctoceplialus Lamairii from Australia ; but 

 0. Chilensis is probably 0. leonina, which is the only Eared Seal I 

 have seen from the west coast of South America, and the latter is 

 Arctoceplialus lohatus. 



In the Leyden Museum (1845) there are four specimens of Fur- 

 Seal, all named Otaria wsina ; they are of a black or dark grey 

 colour, with white tips to the hair and reddish under-fur ; the largest 

 is 4 feet long. One is from the Aleutian Isles, one from New Hol- 

 land, and two from the Creusette Isles. 



The Hair-Seals in the same museum, and the skuU from Brookes's 

 museum, which I described as Arctoceplialus lohatus, are called 

 0. Stelleri ; some are said to come from Japan and others from New 

 Holland. 



In Xing's Narrat. Austral, ii. -414, 1828, I pointed out the dis- 

 tinction between the Fur-Seal of New South Shetland and the Hair- 

 Seal of Australia. 



The skuU from the cabinet of M. Faujas, which Cuvier figures 

 (Oss. Foss. V. 222. 1. 18. f. 4), is much more hke the skull of an adult 

 Arctoceplialus than of Otaria juhata ; the outer and upper cutting- 

 teeth are scarcely larger than the others. 



There are ten skulls of this genus in the Paris Museum : — 



1 & 2. Adult and half-grown. From the Cape of Good Hope. 

 The palates become narrower behind. The front outer upper cutting- 

 teeth rather large ; grinders large, aU except first and hinder upper 

 with two lobes (see Cuv. Oss. Foss. v. 221 . t. 18. f. 5). 



3. Old skull, from M. Parzudaki. 



4. From Australia, by MM. Quoy and Gaimard. 



5. Adult. From Port Jackson. Phoca cinerea. Very little different 

 from the adidt from the Cape of Good Hope. 



6 & 7. Imperfect. King George's Sound. MM. Quoy and Gai- 

 mard (Cuv. Oss. Foss. V. 222). 



8. Adult. Auckland? The 'Zelce,' 1841. 



9 & 10. From America, by M. d'Orbigny. The grinders larger, 

 more acute, and rather further apart. 



The Eared Seals {Arctocepliali) have been divided into Fur- and 

 Hair- (Eared) Seals by the sealers. A. Hooheri and A. lohatus are 

 called Hair-Seals because they are destitute of any under-fur ; but 

 this appears to be the case only with the older specimens ; for the 

 yoimg of ^. lohatus is said to be cohered with soft fur, which falls 

 off when the nest coat of hair is developed. The under-fm- is well 

 developed in the adult specimens of A. tirsinus and A. Delalandii and 

 the half-grown specimen of A. nigrescens, and entirely absent in the 

 adult A. Hool-eri and half-grown A. lohatus in the Museum Collection. 



In Proc. Zool. Soc. 1859, p. 107, I divided this subgenus into two 



