7 8 Anthony, Four Sea Birds neiv to North America. \\txv 



rumped birds. A parallel example is found in a large series of 

 O. socorroefisis, the type of which has whitish patches On the sides 

 of the rump (lateral upper coverts). In a series of over loo skins 

 I only found about 3 per cent, so marked. A few are nearly as 

 white on rump as true leucorhoa^ but the largest part of the series, 

 fully 95 per cent, have sooty black coverts above and below- 

 Two or more species might easily be made from the series, but 

 unfortunately the light rumped birds are found in the same bur- 

 rows with the other birds. 



FOUR SEA BIRDS NEW TO THE FAUNA OF NORTH 



AMERICA. 



BY A. W. ANTHONY. 



During the past spring and summer the following species were 

 noted between San Diego and Cape San Lucas. All are new to 

 our fauna and one, at least, Phaethon rubricaudus is a decidedly 

 unexpected addition to our birds. 



On March 17, between San Geronimo Island and Guadalupe 

 Island, a small white-bodied Albatross several times circled about 

 the schooner but left us before any one could obtain a shot. Half 

 an hour later it reappeared and was killed proving to be an adult 

 specimen of Diomedea immtitabilis Rothschild, described from 

 Laysan Island, between Hawaii and China. 



In April, 1887, I saw a white Albatross within five miles of the 

 spot where the above specimen was taken, and the following year 

 two were seen off San Quentin, fifty miles further north. As none 

 were taken the identity is in doubt but I am inclined to think they 

 were the present species. 



About Cape San Lucas Fuffimis aitrkularis Townsend, was 

 fairly common April 23, and again in early June. Associated 

 with them were two species, one of which agreed very well with 



