The face of the skull elongate, forehead flat. The palate concave, especially in front, with a thickened margin on each side near the teeth, and then narrowed behind; the internal nasal opening elongate, longer than broad, narrow and arched in front, the edge in a line with the orbital process of the zygomatic arch, which is large and well developed. Flap of toes moderate.
In the adult skull of A. antarctica, from the Cape, the fifth hinder grinder has only very short rounded callous roots, which are slightly divided into two lobes; and the hinder sixth upper grinder seems to have a root of the same character. But not having any skulls of younger animals, I am not able to describe what are the forms of the roots of these two teeth in the younger state.
In the skulls of the older specimens (which are not adult, as they have the sutures between the bones still distinct), the fifth and sixth upper grinders have two distinct diverging roots.
* The fifth and sixth upper grinders with two roots (?); the sixth upper partly behind the hinder edge of the zygomatic arch. Arctocephalus. (Africa.)
1. Arctocephalus antarcticus. The Cape Fur-Seal.
Phoca antarctica, Thunb., Mém. Acad. Pétersb. iii. p. 322; Fischer’s Synop. p. 242.
Arctocephalus schisthyperoës, Turner, Journ. Anat. 1868, p. 113, f. .
Arctocephalus schistuperus, Günther, Zool. Record, 1868, p. 20.
Arctocephalus antarcticus, Gray; Allen, Bull. Mus. Comp. Zool. ii. p. 45.
Arctocephalus Delalandii, Gray, P. Z. S. 1859, t. 69 (skull); Ann. & Mag. N. H. 1866, vol. xviii. p. 235; Cat. S. & W. p. 52.