Il8 PATAGONIAN EXPEDITIONS: ZOOLOGY. 



character of the nose-pad in Otaria as compared with those -parts in 

 Phocarctos and Arctocephahis. 



The pictorial history of this animal, as regards its external characters, 

 was further supplemented by Philippi, in 1892, by a series of very inar- 

 tistic and unimportant figures, based in large part on immature examples 

 from Chili. 



Skull and General Anatomy. — The earliest figure of the skull, and 

 one of special importance from a nomenclatural standpoint, was pub- 

 lished by Blainville in 1820,^ since on this skull is based the name 

 Phoca byronia ; this figure, though rather unsatisfactory, is readily iden- 

 tifiable as that of O. jiibata auct., as is shown further by his description 

 of it. In addition to this, the skull is still (or was recently) in the 

 Museum of the College of Surgeons of London, and, as already stated 

 {antea, p. 112), has been repeatedly examined and identified by compe- 

 tent authorities as belonging to this species. In fig. 4 of the same plate 

 Blainville figures the dentition (side view) of another skull of this species 

 under the name of " Sea lion from islands Falckland." The first skull 

 was erroneously supposed to have come from the Island of Tinian, one 

 of the Mariana group. 



The next figure of a skull that seems identifiable with the Southern Sea 

 Lion is that given by G. Cuvier in 1823 in his "Ossemens fossiles,"^ a 

 side view of a " tete adult du Cap" (/. c, p. 222), which appears to be the 

 same skull as that figured by F. Cuvier in 1824,^ the side view given by 

 F. Cuvier corresponding with the figure given by G. Cuvier. F. Cuvier's 

 figures e and/" of this skull, particularly fig. 2,/ of the ventral surface, 

 leave no doubt of its reference to the southern sea lion. This author, 

 however, does not state the locality or history of either of the skulls fig- 

 ured by him as the types respectively of his " Platyrynque " and " Arcto- 

 cephale." As said above, and also earlier in this paper {aiitea, p. 104), 

 there is no doubt of the identity of his type skull of the Platyrhinque with 

 the Otaria jubata of modern authors. 



Hamilton, in 1839, in the volume of Jardine's "Naturalist's Library" 

 devoted to the "Amphibious Carnivora," gave a rude side view of a skull 

 he attributed to the "Sea-lion of Steller" (p. 232), but which is unques- 



' Journ. de Phys., XCI, 1820, pi. (with the number for December, 1820), fig. 3. 



*Oss. foss., V, pt. i, 1823, pi. xviii, fig. 4. 



^ Mem. du Mus. d'Hist. Nat., XI, 1824, pi. xv, fig. 2, d, e,f. 



