BIRDS COLLECTED IN JAPAN. 233 



and undoubtedly in adult plumage would have the head dark colored. The specimen is not in 

 good condition. 



This bird is much like the European Larus ridibundus in the general colors of its plumage, 

 and has very nearly the same distribution of white and black on the primaries. We allude, of 

 course, to that species when immature, or with the head white. It is, however, very consider- 

 ably larger, in which character it appears to approach both the species named at the head of this 

 article. The bill in the present specimen is injured, but appears to have been more slender 

 than in L. ridibundus. 



Head, tail, and entire under parts of the body white, mantle light ashy, first primary white, 

 with its outer edge black and tipped with black, and its inner edge ashy black; second and 

 third primaries white, tipped with black, and with their inner edges (only) black ; fourth pri- 

 mary tipped with black, and its outer web white and its inner web dark cinereous ; all the other 

 primaries dark cinereous, tipped with black; bill and feet red. Total length (of skin) about 18 

 inches; wing 13, tail 5A inches. 



After careful examination, we have concluded that this bird is probably the young of Larus 

 brunneicephcdus, of which we have mature specimens now before us from the collection of the 

 Philadelphia Academy. It is not given in Fauna Japonica nor elsewhere, to our knowledge, 

 as a bird of Japan ; and we much regret that the loss of a portion of the upper mandible has 

 prevented our presenting a figure of it to the reader. 



"Bay of Yedo, April, 1854; eye yellow." 



Mr. Heine mentions this species as having been abundant in the Bay of Yedo. 



CEEATOEHYNCHA MONOCERATA, (Pallas.) 



Alca monocerata, Pallas Zoog. Boss. Asiat. II, p. 362, (1811.) 



Phaleris cerorhyncha, Bonaparte Zool. Journ. Ill, p. 53, (1827.) 



Cerorhyncha occidentalis, Bonap. Ann. New York Lyceum II, p. 428, (1827.) 



Ceratorhyncha occidentalis, Bonap. Comp. List p. 66. 



Chimerina corndta, Eschsc. Zool. Atlas part 3, p. 2, (1829.) 



The Horn-billed Guillemot. 



Eschscholtz Zool. Atlas pi. 12 ; Aud. B. of Am. pi. 402, fig. 5, Oct. ed. VII, pi. 471. 



Specimens of both sexes of this curious bird are in the present collection. The female is 

 entirely without the elevated horn-like appendage at the base of the upper mandible which so 

 strongly characterizes the species, and from which it derives its name. The male and female 

 are, however, very similar in color and all other characters, the white stripes from the corner of 

 the mouth and behind the eye being rather less conspicuous in the female, and the color of the 

 upper parts not so dark as in the male. 



The description by Pallas, cited above, evidently applies to this bird, and that distinguished 

 Kussian zoologist appears to have been the first to introduce it to the notice of naturalists. It 

 inhabits the northern shores of Asia and America. 



"Hakodadi, May, 1854. Eye pale-yellow, iris black, very small." 



BEACHYBHAMPHUS TEMMINCKLT, Brandt. 



Brachyrhamphus Temminckii, Brandt. Bulletin Acad. St. Petersb., (1837.) 

 Ukia wumizushme, Temm. pi. col. 5, liv. 98, (about 1828.) 

 Temm. pi. col. 576 ; Temm. and Schleg. Faun. Jap. Aves pi. 79. 



Specimens in the collection are from Simoda, and are labelled as representing both sexes. 

 30 s 



