ANATIDAS. — CXXXVI. Zoo 
357, CHARITONETTA Stejneger. (xdpis, grace; varra, duck.) 
706. C.albeola(L.). Dipper. BUFFLE-HEAD. BUTTER-BALL. 
Spirit Duck. @ with head very puffy and iridescent; no white 
before eye but a large white ear patch; wing coverts and second- 
aries mostly white. L. 16. W. 7. 9 smaller, dark gray, the 
head scarcely puffy, with white behind eye. N. Am., abundant ; 
an expert diver. (Lat., whitish.) 
358. CLANGULA Leach. (Lat., clangor, a noise.) 
707. C. hyemalis (L.). Soutn-SouTHERLY. OLp Squaw. 
LONG-TAILED Duck. Blackish and whitish; head, neck and lower 
parts mostly white in winter; a patch of gray on head; breast 
brownish black; bill black and orange; tail very long; 9? quite 
different, mostly grayish brown, with short tail. L.20 W. 9. 
T.3(9)to9(¢). Northern, 8. in winter; said to be melodious. 
359. HISTRIONICUS Lesson. (From Lat., histrio, harlequin.) 
708. H. histrionicus (L.). Hariequin Duck. “ Lorps anp 
Lapiges.” ¢ leaden bluish, much varied with black, white, and 
chestnut ; a white patch before eye; speculum violet purple; 9? 
dark brown, with gray, etc.; a white spot before eye and one behind 
ear; bill very short. L. 17. W. 8 T. 4. B. 14. Atlantic, 
aso es CR) 
360. CAMPTOLAIMUS Gray. (xaymrds, flexible ; Aaupos, throat.) 
709. C. labradorius (Gmelin). Lasrapor Duck. ¢ head, 
neck, chest, and wings white; rest of body with ring about neck 
and strip on crown black; 9? chiefly grayish. L. 24. W.9. N. 
Atl, very rare, or perhaps extinct. 
361. SOMATERIA Leach. Erprer Ducks. 
(capa, body; épiov, wool.) 
a. Frontal processes long, acute, clubbed, extending in line with culmen on 
each side of forehead; feathers on side of bill advancing to below nos- 
tril; # witb scapulars white; top of head black; no V-mark on chin. 
(Somateria.) 
710. S. dresseri Sharpe. AMERICAN ErperR Duck. ¢ in 
breeding dress white: under parts, rump, quills, and crown patch 
black; Q reddish brown, streaked; angle on side of forehead 
broad and rounded. L. 24. W.12. TT. 4. Arctic Am.; S. to 
Maine in winter. (Zu.) (To H. E. Dresser, an Eng. Orn.) 
aa. Frontal processes broad, squarish, nearly vertical, out of line of culmen; 
feathers on side of bill not reaching nostrils. (£7ionetta Coues.) 
711. S. spectabilis (L.). Kine Ermer. ¢ chiefly black; neck, 
breast, ete., white; a black V-shaped mark on chin; Q brownish, 
