1877.] 157 [Barrows. 



Bill hardly, if at all, compressed; about as broad at base as long; 

 culmen quite convex, broad and rounded ; tomial edge of upper 

 mandible considerably inflected. Gonys very short; feathers extend- 

 ing between the rami as far as the angle. General form very stout 

 and full; wings rather longer than usual. Color in summer dark 

 bluish black above, extending all over the throat and down on the 

 breast; rest of under parts clear white; scapulars edged, and sec- 

 ondaries tipped, with white. In winter and in young birds, the 

 white of the belly extends to the bill and around the sides of the 

 neck, sometimes, especially in the young, meeting on the nape. As 

 generally seen, there is a mixture of black and white feathers on the 

 upper part of the breast, and almost always the flanks are streaked 

 more or less with black or brown. In some specimens there is a 

 speck of white over the eye. Length about 81 in. Wing 44—5 in. 

 Six specimens. 



Coll. La Fresnaye, No. 8144, Society's Coll., No. 9218; Russia. 



Coll. La Fresnaye, No. 8145, Society's Coll., No. 9219 ; Arctic Sea. 



Coll. La Fresnaye, No. 8146, Society's Coll., No. 9220 ; N. Atlantic. 



Duplicate, No. 1, <$ ; mounted; Boston, Mass., 1871. 



« " 2 ? " " " " " 



" " 3, ? ; skin " " " 



11. Mergulus antiquus. 



Alca antiqua Gmelin, 1788 (from the " Antient Auk " of Pennant, 

 1785). Uria. antiqua Audubon. Synthliborhamphus antiquus Brandt. 

 Brachyrhamphus antiquus Gray. Uria senicula Pallas. Mergulus 

 cirrhocephalus Vigors. No specimen. 



12. Mergulus wurmizusume. 



Uria wurmizusume Temminck. Brachyrhamphus Temminckii 

 Brandt, Gray. No specimen. 



Genus Brachyrhamphus Brandt. 



Small, slenderly built. Bill slender and somewhat compressed; 

 culmen convex; sides of upper mandible much inflected, with the 

 peculiar, tooth-like groove near the point, so noticeable in Lomvia; 

 the tip somewhat overhanging. Nostrils small, oval or circular, 

 reached and partly covered by feathers . Tarsus entirely reticulate. 



13. Brachyrhamphus marmoratus. 

 Brachyrhamphus marmoratus Brandt, Cassin, Gray. Uria Town- 



sendii Aud. Colymbus marmoratus Gmelin. 



Bill very slender; lower mandible with a groove on the side near 



