SEA-tlOXS, AND SEA-BEAES. 29 



1484 a. Skull of young. (PI. XVIII.) 



Gypsophoca tropicalis, Gray, P. Z. S. 1872, p. 660, figs. 5, 6. 

 North Australia {MacgilUvrmj). 53. 10. 22. 3. 



Presented by the Admiralty, 



Skull broad behind, tapering in front ; front part one third longer 



from the condyle than from the condyle to the occiput. Palate 



narrow ; 5th and 6th upper hinder grinders quite behind the hinder 



edge of the zygomatic arch. Under-fur abundant. 



Animal, stuffed. 



1484 h. The lower jaw and front of upper jaw, young. 



North Australia {Macgillivray). Presented by the Admiralty. 



B. TJie gnnders g^ ; the sixth rqyper behind the front edge of the zygo- 

 matic arch ; the fifth is even roith it, hut this tooth is sometimes rudi- 

 mentary and falls out early in life, leaving a space betweeti the fourth 

 and sixth teeth. 



Tribes. ARCTOCEPHALINA. 



Arctocephalina and Callorhinina, Gray, Suppl, Cat. Seah 8f JMiales, 

 pp. 14, 15. 



In the very young Eumetopias there is a hole for the rudimen- 

 tary fifth tooth on one side. In the adult skull there is a space 

 between the fourth and sixth teeth. In the young skull of Phoc- 

 arctos elongatus from Japan this tooth is perfectlj' developed; but 

 it is absent on both sides in the adult, leaving a vacant space. 



* Head elongate ; face produced. 

 3. PHOCAECTOS, Gray, Sujypl Cat. Seals Sf Whales, p. 15. 



Skull elongate, front part much longer than twice the length of 

 the hinder part of the skuU to the condyle. Palate very deep, much 

 wider in the middle. Under-fur sparse. 



Grinders : 5th and 6th hinder upper quite behind the hinder edge 

 of the zygomatic arch. 



1. Phocaectos Hookeei, Gray, Suppl. Cat. Seals &f Whales, p. 15. 



Arctocephalus Hookeri, Gray, Cat. Seals ^- TVhales, p. 53, p. 44. 



f, 15 ; Cat. Mam. B. M., Seals, p. 31, f. 14 (bones of feet). 

 Otaria Hookeri, Clark, P. Z. S. 1873, p. 754, fig. (skull, adult male) 

 Arctocephalus falklandicus, Burmeister, Ann. *§• Mag. Nat. Hist. 



1866, xviii. t. 9. figs. 1-4 (skull). 

 Otaria jubata, -4//e«. 



Animal, stuffed, adiilt female. 



Arctocephalus Hookeri, Gray, Voy. Erebus Sf Terror, pi. xiv. 

 336 c. Skull of above, broken. 



Antarctic seas {from the Antarctic Expedition). 



Presented by the Admiralty. 



