49. COSMONETTA. 397 



(18G2) ; Boardm. I'r. Bost. Soc. N. II. ix. p. 130 (Bay of Fundy) 

 (18G2); Blakist. Ibis, 18G.1, p. 149 (Br. N. Am.); Latur. Ami. 

 Lye. N. Y. viii. p. 2^7 (18U(5); Broivn, Ibis, 18G8, p. 42G (Van- 

 couver I.) ; Turnb. B. E. Pa. p. 4G (18G8) : Ball ^ Bann. Tr. 

 Chic. Ac. 18G9, p. :^98 (Yukon, breeding-) ; Gould, B. of Great 

 Brit. V. pi. 32 (18G9) ; Cmies, Key N. Am. B. p. 291 (1872) ; id. 

 Check-list, n. 510 (1873) ; Dall, Avif. Aleut. M. Unal. eastio. p. 5 

 (1873) ; Ridgiv. Anii. Lye. N. Y. x. p. 390 (Lake Michigan) 

 (1874) ; Cuites, B. N.- IVest, p. 578 (1874) : id. in Elliotts 

 Alask. Affairs, p. 191 (1875); Dress. B. of ' Eur. vi. pi. 442 

 (1877) ; Cones, Bull. Geol. ^- Geugr. Sure. iv. n.3, p. 653 (Dakota & 

 Montana) (1878); Elliott, Mmoyr. Seal-Isl. p. 130 (1881). 



Histrionicus torquatus, a. miuuta, Bp. Compt. Bend, xliii. p. 651 

 (18oG). 



Anas (Ilarelda) histrionica, Schrenck, Reis. Amurl. i. p. 483 (1860) ; 

 Radde, Reis. S. O.-Sibir. ii. p. 374 (1863) (Baikal). 



Bucephala (Histrionicus) histrionica, G. R. Gr. Hand-list, in. p. 87, 

 n. 10700 (1871). 



Histriuuieus niiuutus, Dress. B. of Eur. vi. p. 613 (1877) ; Coues, 

 Bull. Nutt. Oni. Club, v. p. 101 (1880) ; Ridyio. Nom. N. Ain. B. 

 n. 622 (1881; ; Coues, Check-list, 2nd ed. p. 115, n. 730 (1882); 

 Stearns, Pr. U.S. Nat. Mus. 1883, p. 120 (Labrador) ; Merriam, 

 Bull. Nutt. Orn. Club, viii. p. 220 (1883) (Newfoundland); 

 Nelson, Cruise ' Corivin,' p. 98 (1883) ; B., B., c§- R. Water-B. N. 

 Avi. ii. p. 52 (1884) ; Coues, Key N. Am. B. 2nd ed. p. 707 

 (1884) ; Nehrl. J.f. O. 1885, p. 147 (Illinois). 



Bucephala histrionica, Bolau, J.f. O. 1880, p. 132 (Askold), 1888, 

 p. 46. 



Fiiligula (Cosmonetta) histrionica, Rchnw. Orn. Cetitralbl. 1882, 

 p. 5 ; id. Voy. sool. Gdrt. p. 47 (1882). 



Adult male. General plumage of a bluish slate or plumbeous 

 colour, almost black on the neck, rump, upper and under tail- 

 coverts ; from the base of the culmen over the crown to the occiput 

 a black baud, margined anteriorly with white, posteriorly with 

 chestnut on each side ; at the base of the bill a broad patch of 

 white ; a spot on the ear-covcrts and a band on the sides of the 

 neck white ; round the lower part of the neck a white collar, 

 margined with black, incomplete anteriorly ; on the sides of the 

 breast a cresceiitic white band, margined with black anteriorly and 

 posteriorly ; a white baud along the middle of the scapulars ; abdo- 

 men greyish brown; tlanks chestnut; a white spot just at the base 

 of the under tail-coverts, on each side ; wings dark slaty grey ; 

 secondaries dark metallic blue, forming the speculum : the inner 

 secondaries broadly white, margined with black on the outer web ; 

 a white subapical band at the tip of the greater wing-coverts, and 

 a few hidden white round spots on the anterior median wing- 

 coverts ; under wing-coverts and axillarics dusky grey; tail slaty 

 black : bill deep leud-blue, the nail lighter ; iris dark brown ; legs 

 brown, the webs blackish. Total length about IT'oO inches, wing 8, 

 tail 4o, culmen 1-2, tarsus 1"35. 



Female. Upper parts dark brown, with an olivaceous tinge ; a 

 whitish patch in front and below the eyes : another on the ear- 



