SHORE FISHES OF GALAPAGOS ISLANDS 361 



specially numerous from about 3 N. to 11 N., between Cocos and 

 Clipperton islands. We observed them here for about 3 weeks 

 during July in great numbers, the ocean appeared to be everywhere 

 filled with them. They fed principally on a young Hemirhamphid 

 which greatly exceeded its enemies in numbers and on all sides both 

 fugitives and pursuers were to be seen leaping from the water. The 

 bonitos and horse mackerels often throw themselves a considerable 

 distance through the air. 



44. THUNNUS THYNNUS (Linnaeus). 



Scomber thynnus LINNAEUS, Syst. Nat., Ed. x, 297, 1758, Europe. 

 Thunnus thynnus, JORDAN & EVERMANN, Fishes North and Mid. Amer., I, 

 870, 1896. 



Range. Tropical and temperate seas. 



Two specimens from Wenman Island and one N. E. off Point 

 Albemarle, Albemarle Island, Galapagos Archipelago. Common in 

 warm water from about 3 N. to n N. (See under Gymnosarda 

 pelamts.) This fish is not uncommon in the Humboldt current about 

 the Galapagos Islands, but does not occur in these colder waters in any 

 such abundance as in the warmer currents a little farther north. 

 Nearly all the individuals that we saw were each about 2 feet long. 



45. GERMO ALALUNGA (Gmelin). 



Scomber alalunga GMELIN, Syst. Nat., I, 1330, 1788, Sardinia. 

 Germo alalunga, JORDAN & EVERMANN, Fishes North and Mid. Amer., I, 871, 

 1896. 



Range. Tropical and subtropical seas in general. 



We obtained one specimen of this species during August, at about 

 26 10' N., 123 25' W., but the species was not observed south of 

 here where Gymnosarda pelamis and Thunnus thynnus were so 

 abundant, nor did we meet with it about Clarion, Clipperton, Cocos 

 or the Galapagos islands. 



46. SCOMBEROMORUS SIERRA Jordan & Starks. 



Scomberomorus sierra JORDAN & STARKS in Jordan, Proc. Cal. Acad. Sci., 

 2d series, 428, 1895, Mazatlan. JORDAN & EVERMANN, Fishes North 

 and Mid. Amer., i, 874, 1896. 



Range. Pacific coast of tropical America; Galapagos Islands. 

 One specimen taken in Tagus Cove, Albemarle. 



