126 PATAGONIAN EXPEDITIONS; ZOOLOGY. 



ArctocepJialns nigyesceiis Gray, Zool. Erebus and Terror, t. f. — [cf. Gray, 

 P. Z. S., 1859, 109, 360 (based on a young skull, from "Falkland 

 Islands?" ; Cat. Seals and Whales, 1866, 52 (same specimen) ; Ann. 

 & Mag. Nat. Hist. (3), XVIII, Sept., 1886, 236 (same specimen, here 

 made type of a subgenus Euotaria) ; Suppl. Cat. Seals and Whales, 

 1871, 20. 



Otaria {^Arctophoca) nigresceiis Peters, Monatsb. K. Akad. Berlin, 1866, 

 669. 



'' Otaria nigrescens (Gray)" Burmeister, Zeits. Naturwissensch. Halle, 

 XXXI, 1868, 198, in text; referred by Burmeister to A. falklaudica 

 (Shaw). 



Arctophoca nigrescens Peters, Monatsb. K. Akad. Berlin, 1871, 564. 



Euotaria nigrescens Gray, Ann. & Mag. Nat. His. (4), I, Feb., 1868, 106 

 (several Falkland Island specimens mentioned) ; ibid.,\\,Oci., 1869, 

 264 (three skulls from Desolation Island, southwest coast of Pata- 

 gonia). 



A rctocepha/i(s grayii Sco\X, Mamm. Recent and Extinct, 1873, 19. Avow- 

 edly a new name for Arctocephaliis falklandicus auct. 



Euotaria latirostris Gray, Hand-List Seals, 1874, 37, pi. xxvii, skull. 

 Based on a skull supposed to have come from Falkland Islands, 

 previously referred by Gray to his ArctocepJmlus nigrescens. 



Arctocepiialus (Arctophoca) gracilis Nehring, Arch, f Naturg., 1887, i, 

 92, pi. ii (skull, young). Rio Tramandahy, Rio Grande do Sul, 

 Brazil. 



f Otaria brachydactyla Philippi, An. Mus. nac. Chile, I, Zool., 1892, 6, 

 43, pi. xiii, fig. 2, animal, pi. xxii, skull, very young, with the milk 

 dentition ; length of animal, 900 mm. Chonos Archipelago. 



Arctocepiialus falclandicHS var. gracilis Nehring, Sitzungsb. Ges. Naturf 



Freunde zu Berlin, 1877, 142 — coast of Rio Grande do Sul, Brazil. 



External Characters. — Pelage of two kinds of hair — long, coarse, 



blackish overhair tipped with gray or yellowish gray, giving a grizzled 



effect, except on the ventral surface, where the hairs are without gray 



tips ; beneath this is the thick soft brownish underfur, lighter at the tips 



and darker basally. 



In the absence of specimens it is almost impossible to give a satisfac- 

 tory description of the external characters of the South American Fur 



Seals. What the external distinctions may be, can be determined only by 



