UISTRIOMCUS. 107 



Genus HISTRIONICUS Lesson. (Pago 86, pi. XXV., fig. 3.) 



Species. 

 Adult male in winter : Lores and broad stripe on each side of crown, spot over 

 cars, short stripe down each side of hind-neck, narrow collar round lower neck, 

 broad bar across each side of breast, middle portion (longitudinally) of outer scap- 

 ulars, greater part of tortials, spot near tip of greater wing-coverts, and spot at 

 eacli side of base of tail, white ; broad stripe along each side of crown, together 

 with entire sides and flanks, bright rufous ; rest of plumage chiefly bluish plum- 

 beous, deepening into blackish along the margins of the white markings ; speculum 

 dark metallic violet-blue. Adult male in summer : Colors very much duller than in 

 the winter plumage, the pattern of which is imperfectly indicated; speculum dull 

 dusky brownish gray with little metallic gloss ; lower pai'ts grayish white, spotted 

 with grayish brown, the side.■^, flanks, and under tail-coverts nearly uniform gray- 

 ish brown. Adult female : Much like the summer male, but the head, neck, and 

 chest graj-ish brown, with a distinct white spot on the eai'-covert region, and the 

 fore part of the head (laterally) inclining to white. Young : Similar to the adult 

 female, but browner and more uniform above, the chest, flanks, and under tail- 

 coverts decidedly brownish. Length 15.00-17.50, wing 7.40-8.00, culmen 1.05-1.10. 

 Ejjs 2.30 X 1-62, bufty white or pale buff? (Identification doubtful.) Hab. North- 

 ern portion of northern hemisphere ; in America, south, in winter, to Middle States, 

 Ohio Vallej-, and coast of California, breeding south to Newfoundland, northern 

 IJocky Mountains, and the Sierra Nevada, as far as lat. 38°. 



155. H. histrionicus (Lixx.). Harlequin Duck. 



Genus CAMPTOLAIMUS Gray. (Page 86, pi. XXV., fig. 2.) 



Species. 

 Adult male : Head, neck, chest, scapulars, and wings (except quills) white ; 

 rest of plumage, including stripe on top of head and broad ring round neck, deep 

 black; stiffened feathers of cheeks brownish white. Adult female : Uniform brown- 

 ish gray, the wings more plumbeous ; tertials silver}- graj-, edged with blackish ; 

 secondaries white, primaries dusk3\ Young male : Similar to the adult female, but 

 chin and throat white, and white chest of adult male strongly indicated ; greater 

 wing-coverts white. Length about 18.00-23.75, wing 8.50-8.90, culmen 1.60-1.70, 

 tarsus 1.50-1.60, middle toe 2.25-2.40. Hab. Formerly, northern Atlantic coast of 

 North America, south, in wintci-, to Long Island, New Jersey, and the Great Lakes. 

 Believed to be now nearly if not quite extinct. 



150. C. labradorius (G.mel.). Labrador Duck. 



Genus ENICONETTA Gray. (Page 86, pi. XXV., fig. 5.) 



Species. 

 Adult male : Head and ujijier neck satiny white, the stiffened feathers of lores 

 and short occipital tuft olive-green ; space round eyes, chin, throat, lower neck (all 



