BIRDS — ^LAEIDAE— CHEOICOCEPHALUS CUCULLATUS. 



851 



List of specimens. 



OHKOICOOEPHALUS FEANKLINII, B r u c h . 



Franklin's Rosy Gnll. 



Larus franklinii, Rich. F. B. A. 11, 1831, 424; pi. Ixxi.— Nhtt. Man. II, 1834, 293.— Aud. Birds Am. VII, 



1844, 145, (not figured.) 

 Chroicocephalus franklinii, Bruch, Cab. Jour. 1855, 289. 



Sp. Ch. — Adult. Head and upper part of neck black, with a plumbeous hue on the fore part of the neck extending a little 

 lower than it does behind ; both eyelids white, except in front ; lower part of neck, under plumage, rump, and tail white ; the 

 under surface and interior lining of the wings deeply tinged with peach-blossom red ; back and wings dark bluish gray ; the 

 outer web of the first primary is black nearly to the end, the inner web of the first and both webs of the four next are crossed 

 with a subterminal black band about two inches wide on the outer and lessening to a half inch on the fifth; all the quill feathers 

 end with white^ on the first primary it is about one inch in extent ; shafts of all the primaries and the inner web of the first 

 white, the other primaries are the same color as the back, except on the inner edge of the inner web and immediately adjoining 

 the black bar, where they are white ; bill and legs vermilion. 



Length, 15 inches ; wing, 12 ; tail, 4^ ; bill, 1; ; tarsus, 1|. 



Hah. — Missouri river ; interior of fur countries. 



There are four specimens of this beautiful and well marked species in the collection, two of 

 them in perfect plumage, in which a delicate roseate tint on the neck and under surface is very 

 apparent. It is easily distinguished from G. atricilla by its mach darker hood and the very 

 differently colored primaries. 



List of specimens. 



CHROICOCEPHALUS CUCULLATUS, Lichtenstein. 



The Hooded Gall. 



" Chroicocephalus cucullatus, Licht." Bruch, Rev. Lar. in Cab. Jour. 1855, 290. 



Sp. Ch. — Mult. Hood plumbeous black, with an oval white spot over the eye and another on the hind part of the lower eye- 

 lid, both extending backward; the entire neck, upper tail coverts, and under plumage pure white; back and wings ash blue, 

 about the. shade oi franklinii ; primaries bluish ash, the first black on the outer web and for one quarter its length on the inner 



