912 



U. S. P, R. R. EXP. AND SURVEYS — ZOOLOGY — GENERAL REPORT. 



FiGCRES.— Edwards, Birds I, pi. 5n.— Vieiixot, Gal. II, pi. 294,— Aud. B. of Am. pi. 219, Oct. ed. VII, pi. 474.— Gouto B. 

 Eur. IV, pi. 399.— Nadmann B. of Germ. pi. 330. 



Sp. Ch. — Bill straight, pointed; wing rather short, weak; first quill longest; tail short. A large oval transverse space on the 

 wing, white, which is also the color of the under wing coverts and axillary feathers, outer edge of the wing and shoulder brownish 

 black. All other parte of the plumage brownish black, with a greenish tinge and darker on the back. Bill black, feet red. 

 Younger and winter plumage, under parts, neck and rump white ; head above and back dark brown ; large space of white on the 

 wing, as in summer. 



Total length about 13 inches; wing, 6J; tail, 2 inches. 



Bah. — Northeastern coast of America, Greenland, (Dr. E. K. Kane ;) South, in winter, to New Jersey. Behriog'a Straits, 

 Captain Rodgers. 



Very abundant on the nortlieastern coasts and islands of America, and also in the northern 

 latitudes of Europe. This bird is very easily recognized by its black plumage and large white 

 space on the wing. 



A single specimen is in the collection before me, collected by the expedition of Captain 

 Eodgers on Herald island, inside of Behring's Straits. 



UEIA COLUMBA, (Pallas,) Cassin. 



The Western Guillemot- 



CeppJius cdumba, Pallas, Zoog. Rosso-Asiat. II, p. 348, (1811.) 

 Uria mandlii, Light. Verz. p. 88, (1823) ? 



" JJria mandtii, Light. Mus. Dresd." Reigh. Vollst. Naturg. Schwimmv. pi. 4, fig. 47. 

 FiGDREs. — Voy. Vincennes and Peacock, Birds, pi. 38, fig. 1. 



Sp. Ch. — Rather larger than the preceding, bill larger and stronger. White space on the wing, divided by a band of brownish 

 black running diagonally from the edge of the wing ; under wing coverts dark ashy, frequently tipped with white ; axillary feathers 

 ashy brown. All other parts of the plumage brownish black, with a greenish lustre, and frequently tinged with ashy on the back. 

 Bill black, feet red. Younger and winter pluni'ir/e. Upper parts brownish black ; under parts white, generally more or less 

 spotted with dark brown ; white space on the wing as in summer, but frequently less distinct. 

 Total length about 13^ inches. 



Hah. — Western and northwestern coast of America. Kamtschatka, (North Pacific Surveying and Exploring Expedition, 

 Captain Rodgers, United States navy.) 



Much resembling the preceding, but easily distinguished by the white space on the wing, 

 being divided into two parts, as described above. This bird appears to be exclusively an 

 inhabitant of the North Pacific ocean, and rears its young as far south as Puget's Sound. In 

 the iine collection made by Dr. George Suckley, United States army, are young birds scarcely 

 feathered, which were obtained at that locality. 



List of specimens. 



