HISTRIONICUS. 107 



Genus HISTRIONICUS Lesson. (Page 86, pi. XXY., fig. 3.) 



Species. 

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

 ears, short 8trij)e down each side of hind-neck, narrow colUir round lower neck, 

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

 ulai's, greater part of tertials, spot near tip of greater wing-coverts, and spot at 

 each 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 parts grayish white, spotted 

 with grayish brown, the sides, flanks, and under tail-coverts nearly uniform gray- 

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

 chest grayish brown, with a distinct white spot on the ear-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. 

 Eggs 2.30 X 1-62, buff'y white or pale buff? (Identification doubtful.) Hah. North- 

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

 Ohio "Valley, and coast of California, breeding south to Newfoundland, northern 

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



155. H. histrionicus (Linn.). Harlequin Suck. 



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 silvery gray, edged with blackish ; 

 secondaries white, primaries dusky. 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. Hah. Formerly, northern Atlantic coast of 

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

 Believed to he now nearly if not quite extinct. 



156. C. labradorius (Gmel.). Labrador Duck. 



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



Species. 

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

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



