606 Atc^. 



pi. iv. fio-. 3 (188-5) [Commander Is.] ; Turner, Auk, ii. p. loO 



(1885) [Nearer Is., Alaska]; A. O. U. Check-l. p. 79 (1886); 



Palmen, Veya-Exped. Vetenxk. lakttag. v. p. 398 (1887) ; Nelson, 



Rep. N. H. Alaska, p. 42 (1887j ; Ridr/iv. Man. N. Am. B. p. 13 



(1887) ; Stejn. P. U. S. Nat. Mu>^. x. p. 118 (1887) [Commander Is.] ; 



Seak, P. Ac. Philad. 1898, p. 129 [Kino's I., St. Georse 1.1. 

 Ciceronia piisilla, Tacz. J. f. O. 1876, p. 203 [Ussuri] ; id. Bull. 



Soc. Z. Fr. ii. p. 51 ('1877) ; Di/bmcski, Oru. Cenf.raU)l.'im-2, p. 28 ; 



Nelson, Cruise Carwin, p. 11(>, pi. (1883) ,• Di/bo?i\iki, Bull. Soc.Z. 



Fr. viii. p. 350 (1883) [Bering I.] ; Di/bojvski ^ Tacz. Bull. Soc. 



Z.Fr. ix. p. 147 (1884); Baird, Brew. ^ Bidf/iv. Water-B. N. 



Amer. ii. p. 507 (1884); Tacz. Mem. Acad. St. Petersb. xxxix. 



p. 1229 (1893) [E. Siberia]. 

 Ciceronia microceros, Saunders, Ibis, 1883, p. 348. 

 Fratercula pusilla, Seebohm, B. Japan, p. 287 (1890). 



Adult in hreeding -'plumage. General colour above deep black ; 

 forehead and lores ornamented with short narrow pointed white 

 plumes, continued backwards in a line across the cheek ; a line of 

 longer white plumes commencing behind the eye, and passing across 

 the ear-coverts ; chin smoky-black ; throat Avhite ; fore-neck and 

 upper chest mostly smoky black ; rest of the iinderparts mostly 

 white, more or less mottled, especially on the breast, with smoky - 

 black ; inner secondarj- quills tipj)ed with white ; generally a more 

 or less distinct patch of white on the scapulars ; lesser and median 

 under wing-coverts dusky, greater covei-ts white ; tail black, com- 

 posed of 14 feathers. Iris whire ; terminal half of bill dark reddish, 

 basal half and tubercle dusky (in dry skin). Total length about 6"o 

 inches, tubercle at base of culmen Q-l, culraen from feathers on 

 forehead to tip 0-35-0-38, from gape to tip 0-6-0-G3, greatest depth 

 of culmen at base 0-25-0-28, wing 3'G-3"9, tail 1*2, tarsus 0-75, 

 middle toe and claw 1-05. 



Adult in non-breeding plumage. Differs from the above in wanting 

 the tubercle at the base of the culmen ; the bill is smaller and more 

 compressed, and the entire underparts white, with the exception of 

 the chin and upper part of the throat which are dark smoky-grey, 

 and generally a few leathers of the belly which are tipped with the 

 same colour. " Iris white ; bill horny brown, genj-s and tomia some- 

 what lighter, extreme tip of lower mandible whitish ; feet light 

 whitish cobnlt-blue, joints darker inclining to purple ; soles and 

 webs blackish" {L. Sti'jneger). 



Immature. Similar to the adult in winter, but the bill is smaller 

 and the white plumes on the forehead and lores are absent. 



Young in down. Said to be uniform sooty-slate, paler and of a 

 more greyish tint on the underparts. 



Ifab. Coasts of the North Pacific : from Japan, the Sea of Ochotsk, 

 and Kamschatka to the Commander Group, and across Bering Sea 

 to Alaska. 



a-d. cf 2 ad. et Ilakodadi, March {Henso7i). Seebohm Coll. 



imm. sk. 



e. S imm. sk. Ilakodadi, May. Seebohm Cull. 



/. Ad. sk. Kamscliatka, summer. Purchased. 



