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PROCEEDINGS OF THE ACADEMY OF 
on the nape, of deep velvety black. Lower parts of neck all round, tail and its 
coverts, four inner primaries, secondaries, greater part of greater coverts, tips 
of tertials, except the innermost, and whole under parts, pure white. Mantle 
slatey blue, extending quite to the tips of the inner tertials. Edge of wing, from 
the carpal, with the bastard wing, black. First five primaries, with their shafts, 
black ; their extreme tips, and the outer half of the inner webs, to near the end, 
white. Other primaries white, the sixth with a touch of black on the outer 
web ; web near the base, extending a little on the inner web. Emargination of 
tail 1-25 inches. Length 13-75; wing 10-75. Bill 1-00, along gape 1-50, height 
at angle -30 ; tarsus 1-25, middle toe and claw same. 
Habitat. — Arctic America. Lake Winnipeg. (Kennicott.) 
The preceding description was drawn up from a very beautiful and perfect 
specimen, collected on Lake Winnipeg by Mr. Kennicott. 
Genus VIII. Creagrus Bonap. 
Creagrus Bp. 1854. fide gen. Rep. 
25. Creagrus furcatus (Neboux.) 
Larus furcatus Neboux. Xema furcatus. Bruch 1853. Creagrus furcatus Bruch 
1855. 
Sp. Char. — “Adult: Head and nearly all of the neck grayish brown; two 
small rounded white spots embracing symmetrically the base of the upper man- 
dible ; mantle grayish white ; breast, abdomen, and under wing coverts white ; 
wings extend beyond the tail ; primaries black on their inner and outer edges ; 
the smaller wing coverts white ; the greater slate color bordered with white ; 
tail very much forked and white, the two outer tail feathers much longer than 
is usual in this class of birds ; bill very much bent, black at the base and white 
at the extremity : iris red ; eyelids orange ; tarsi and feet red ; claws black. 
“ Total length 60 centimetres.” 
“ Habitat. — California.” 
Of this rare and remarkable Gull I have never seen a specimen ; but copy the 
description from the General Report, to complete this very cursory notice of the 
Gulls of North America. 
Catalogue of Birds collected by the United States North Pacific Surveying and 
Exploring Expedition, in command of Capt. John Rodgers, United States 
Navy, with notes and descriptions of new species. 
BY JOHN CASSIN. 
O 
1. Falco peregrinus, Gmelin. 
From Japan. 
We find in the collection one very fine adult specimen, quite identical with 
specimens from Asia in the Museum of the Academy, and the first ever brought 
to this country from Japan. Mr. Stimpson’s note is, “shot by Mr. Charles 
Wright in the hills west of the city of Hakodadi, Island of Jesso, June, 1855.” 
2. Micronisus badius, (Gmelin). 
From China. “ Hong Kong, March, 1855, collected by Mr. Salvadora Pel- 
key.” (Mr. Stimpson.) 
3. Buteo vulgaris, Bechstein. 
Buteo vulgaris japonicus, Temm. and Sclileg., Faun. Japon. Aves, p. 16. 
From China. The only specimen is in light colored plumage and not adult. 
“ Common about the harbor of Hong Kong, March, 1855.” (Mr. Stimpson.) 
4. Milvds govimda, Sykes. 
Milvus melanotis, Temm. and Schleg., Faun. Jap. Aves, p. 14, (1850). 
[J une, 
