Otaria jubata, label in Zoological Gardens, 1865; Gray, Ann. & Mag. Nat. Hist. 1868, i. p. 109; Murie, P. Z. S. 1869, p. 101, t. viii. (male, female, and young); Abbott, P. Z. S. 1868, p. 190; Sclater, P. Z. S. 1868, p. 528; Peters, Monatsber. 1866, p. 262.
Otaria leonina, Peters, Monatsb. 1866, pp. 264, 665; Gray, Cat. Seals & Whales, p. 59, f. 18.
Otaria Godeffroyi, Peters, Monatsb. 1866, p. 266, t. 1.
Otaria Byronia, Peters, Monatsb. 1866, pp. 269 & 666.
Otaria (Phocarctos) Ulloæ, Peters, Monatsb. 1866, p. 270.
Otaria Ulloæ, Tschudi, Fauna Peruana, pp. 135, 136, t. vi.
Otaria (Otaria) Ulloæ, Peters, Monatsb. 1866, pp. 667 & 671.
Inhab. South America, Falkland Islands, Chili.
The oldest of the three adult skulls in the British Museum differs from the other two in the pterygoid processes of the hinder edge of the palate being closer together than in the rest; but this character seems to depend on the greater age of the animal, as it differs slightly in the other two specimens. In all the younger specimens, varying greatly in size, the pterygoid processes are far apart.
Dr. Peters considers (1) Platyrhynchus leoninus of F. Cuvier, (2) Phoca Byronia of Blainville, and (3) an adult specimen which is in the Hamburg Museum, and of which he described and figured the skull as O. Godeffroyi, to be distinct species. I cannot see any difference between the skull in the College of Surgeons, on which Phoca Byronia was founded, and those in the British Museum; and the figure of the skull described as O. Godeffroyi is very similar to the skull in the British-Museum collection which I have called O. jubata.