ZooL.-VoL. III.] HELLER— GALAPAGOS MAMMALS. 



245 



While the crew were engaged in collecting shark fins, we 

 had an opportunity of dissecting a large number of sharks, 

 and found that a majority of those caught contained the 

 remains of seals, chiefly pups. 



From our observations the horse mackerel T/mnnus 

 thynnus appears to form a considerable part of the food of 

 the seals. 



The coloration of the wet skin of an adult female was as 

 follows: Dorsum from eyes to base of tail dusky gray 

 minutely mottled with light yellowish; sides and underside 

 of neck, sides of body, region about ears and base of vi- 

 brissas light yellowish brown ; entire under parts posterior to 

 fore-flippers brown; ears yellowish at base, grayish pos- 

 teriorly, with dusky tips; nose black; vibrissa pale. Another 

 adult female was similar to the above but sides of head and 

 rump extensively brown. 



Arctocephalus Cuvier. 



Arctocephalus Cuvier, Mem. du Mus. d'Hist. Nat. v. 11, 1824, p. 205. 



Range. — South African, Australian, and Antarctic re- 

 gions; coasts of South America from Cape Horn north to 

 Rio Janeiro, and Guadalupe Island, Lower California. 



Arctocephalus galapagoensis new species. 



Arctocephalus australis Allen, U. S. Geol. and Geog. Sur. Misc. Pub. v. 12, 



1880, p. 210. 

 Arctocephaltis philippi ]ordan, Rapt. Fur Seal Investig. Wash. pt. 3, 1899, 



p. 272. 



Type, adult male, skull no. 2480, Leland Stanford Junior 

 University Zool. Coll.; Wenman Island. 



