132 PROCEEDINGS OF THE ACADEMY OF [1898. 



rainy day with a strong wind blowing from the northwest. All the 

 day, band after band of these Gulls passed the point following the 

 coast line to the south ; in one of these bands I counted forty-eight 

 individuals, most of them adults. Hab., coasts of Arctic seas; 

 south in winter to Long Island and California. 



44. Larus glaucescens. Glaucous-winged Gull. 



The Glaucous-winged Gulls were fairly common from the Aleu- 

 tian Islands to the Bering Strait. They were seen to associate freely 

 with the smaller Gulls, and at times would come quite near the ves- 

 sel, differing in this respect from the L. glaums, which so far as we 

 could see did not associate much with the other species. 



Two specimens taken at Orca Station, S. W. Alaska, give the fol- 

 lowing measurements: No. 3,425 (L. S. J. U.) ; wing, 17 ; culmen, 

 2.56 ; depth of bill through angle, .84 ; depth of bill through nos- 

 trils, .80; tarsus, 2.86; mid-toe with claw, 3.20; tail, 7.18: No. 

 3,4'26 (L. S. J. U.): wing, 17.5; culmen, 2.36 ; depth of bill at 

 angle, .90 ; depth of bill at nostrils, .80 ; tarsus, 2.86 ; mid-toe and 

 claw, 3.28 ; tail, 7.3. Hab., coasts of the north Pacific and Bering 

 Sea, from Japan northwest, across through Aleutian chain, and south 

 in winter to California. 



51a. Larus argentatus smithsonianus. American Herring Gull. 



Birds ascribed to this species came flying about our vessel near 

 Unalaska and also near Aunamak Island. No specimens were 

 secured. Hab., whole of North America, south in winter to Cuba 

 and Lower California. 



53. Larus califomicus. California Gull. 



No specimens were taken, but birds ascribed to this species were 

 met with quite frequently near Aunamak Pass. Hab., western 

 North America, chiefly in the interior, from Mexico to Alaska. 



55. Larus brachyrhynchus. American Mew Gull. 



Birds of this species were frequently observed along the Alaskan 

 coast as far north as Icy Cape, one specimen being shot at this place 

 July 30th. Hab., northwestern North America breeding far north ; 

 south in winter along the Pacific coast to Southern California. 

 62. Xema sabinii. Sabine's Gull. 



These Gulls were first observed about ten miles off Icy Cape, 

 Alaska, where a company of five came flying over the ice and passed 

 our vessel. On August 8th these gulls were extremely abundant at 



