40 SEALS. 
the zygomatic arch. Lower jaw-bone narrow, rounded below: — 
without any angle behind. 
Arctocephalus Hookeri. Skull, palate and grinder. 
Nose simple, with a rather large callous muffle above and be- 
tween the nostrils. Whiskers cylindrical, thick, round, tapermg, 
not waved, hinder ones largest. Ears with a subcylindrical, di- 
stinct, external conch. 
The fore-feet elongate. The palms bald, longitudinally grooved. 
Claws 5, very small, rudimentary, scarcely visible. Hind-limbs 
rather produced. The legs free. The hind-feet elongated: the 
soles bald, longitudinally grooved: the toes subequal, short, 
webbed, and each furnished with a long membranaceous expan- 
sion, the web and the membranaceous expansion bald. 
Arctocephalus (Arctocephale), F. Cuvier, Mem. Mus. xi. 205. 
t. 15. f.1; Dict. Sci. Nat. lix. 463, 1829; Fischer, Syn. 250; 
Gray, Zool. Erebus & Terror; Turner, P. Z. S. 1848, 88. 
Otaria, sp., Peron; Nilsson. 
Dr. J. Miiller described three species from the skulls only 
viz. O. Stelleri, O. Chilensis, and A. Lamairii from Australia. 
In the Leyden Museum (1845) there are four specimens of 
Fur Seal, all named Otaria Ursina; 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 Isles Aleutiennes, one 
from New Holland, and two from Isles Crussettes. 
The Hair Seals in the same museum, and the skull from 
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