Barrows.] 156 [April 4, 



Bill short, not very much compressed, as deep as long. Culmen 

 very convex, tip bending over the point of lower mandible very 

 slightly; angle of gonys well marked; rictus very irregular. A 

 horny plate at the angle of the mouth which, when the bill is closed, 

 appears to be merely a continuation of the broad, bare side of the 

 lower mandible. This plate is said to be wanting in winter and in 

 young birds, and in this condition the bird has been described under 

 the specific name of tetracula. Nostrils rather prominent, irregu- 

 larly oval in shape. A recurved crest of from twelve to twenty nar- 

 row brown or blackish feathers rises from the forehead and curls over 

 upon the bill. A series of very slender, filamentous, white feathers 

 extends from under and behind the eye down the side of the neck. 

 Genera] color brownish, becoming almost black on the back, lighter 

 and almost ashy on the breast and belly. No white anywhere ex_ 

 cept the filamentous feathers on the side of the head. Length about 

 9 in. ; wing 5-5^ in. One specimen. 



Coll. La Fresnaye, No. 8135, Society's Coll., No. 9209; Kamt- 

 schatka. 



7. Phaleris camtschatica. 



Alca camtschatica Lepechin. Phaleris camtschatica Brandt, Gray, 

 Cassin. Simorhynchus camtschaticus Schlegel. No specimen. 



8. Phaleris pusilla. 



JJria pusilla Pallas, 1811. Phaleris microceros Brandt, Cassin. 

 Phaleris nodirostra Bonaparte, Audubon, Gray. No specimen. 



9. Phaleris aleutica. 



Uria aleutica Pallas, 1811. Ptychorhamphus aleuticus Brandt, 

 Bonaparte, Cassin, Elliot. Phaleris aleutica Gray. Mergulus Cas- 

 sinii Gambel. Arctica Cassinii Gray. No specimen. 



Genus Mergulus (Bay) Vieillot. 



Bill variable in length and degree of compression; never exces- 

 sively compressed, in one species hardly at all. Culmen always 

 convex. Nostrils oval or circular, placed in an evident fossa and 

 reached but not covered by feathers. Tarsi more or less compressed ; 

 distinctly scutellate in front. 



10. Mergulus alle. 



Alca alle Linnaeus, 1758. Mergulus melanoleucus Ray. Uria alle 

 Pallas, Temminck, Audubon. Mergulus alle Vieillot, Gould, Bona- 

 parte, Cassin, Verrill, Coues. 



