2376 The Zoologist— NovemcilU, 1870, 



suddenly deflected ; rictus straiglit, ascending to near the tip ; gonys 

 and outline of inferior mandibular rami straight. 



Adult. — Entirely fuliginous or plumbeous-black, with a shade of 

 invisible green. White mirror on wing-coverts. Nearly divided in 

 two by a broad rather curved oblique line of blackish. No white on 

 under wing-coverts, these being grayish brown. Bill and claws black. 

 Mouth and feet vermilion-red, tinged with carmine. "Iris white" 

 (label). Length 13-00; extent 2300; wing 700; tail 2-20; tarsus r25; 

 middle and outer toe and claw 1'90 ; inner toe and claw 1*45 ; bill along 

 culraen 1*20, along rictus TSO, along gonys "65; depth at base '40; 

 width -30. 



This species closely resembles U. grylle, but diflfers in being upon 

 an average larger, the wing particularly longer; the bill stouter, 

 straighter, more obtuse at the point; and the marking of the wings 

 different, as above described. The changes of plumage and the indi- 

 vidual variations, as exhibited in the large series of specimens 

 examined, are entirely parallel with those of Uria grylle. It is worthy 

 of note that this species occurs, in summer, upon the Pacific coast of 

 America, much south of the con-esponding latitudes on the Atlantic 

 coasts frequented at this season by U. grylle. 



One of the earliest indications, if not the first, of this species, may 

 be recognized in the variety of the black guillemot from Kamtschalka, 

 described by Pennant : this is said to have a while oblique liue issuing 

 from the white spot on the wing. The var. (i of U. grylle of Latham 

 and Donndorff is the same bird. Pallas appears to be the first to 

 bestow a specific name. The question involved in the Uria Mandlii 

 of Lichtenstein has already been considered in the preceding article. 



Uria Carho (Pallas), Brandt.— Habitat : "In oceano orientale circa 

 insulas Aleuticas, praeserlim Unalaschka" (Pallas), Kanitschatka (Mus. 

 Acad. Philada.), Japan (Mus. Smiths. Inst.) 



Larger than U. grylle and U. Columba ; the bill] especially larger, 

 stouter and straighter. Feathers of nasal fossa; and those around base 

 of lower mandible whitish. A conspicuous white area around eyes, 

 and extending an inch or so behind them. No white on either surface 

 of wings. Rest of plumage brownish black, becoming ashy black on 

 the under parts ; perhaps deep plumbeous-black, with a shade of 

 greenish, in more mature specimens than those examined. Bill black. 

 Legs and feet chrome-yellow, tinged with vermilion ; webs coral-red in 

 the dried state, probably vermilion or carmine-red in life. Length 14 

 to 15 inches J wing 7-75 ; tail 250; culmenPSS; commissure 220 ; 



