148 THE NATURALIST'S GUIDE. 



231. Chaulelasmus streperus, Gray. — Gadwall, 

 "Gray Duck." Rare in spring and autumn. 



232. Mareca Penelope, Bon. — European Widgeon. 

 Straggler from Europe. Mr. Samuels says it has been 

 taken in the State. 



233. Mareca Americana, Steph. — American Widgeon. 

 " Baldpate." Not uncommon during the migrations. 



234. Aix sponsa, Swain. — Wood Buck. Common 

 summer resident. 



235. Fulix marila, Baird. — Scaup Duck, "Black- 

 head, " Blue-bill." Not common on the migrations. 



236. Fulix affinis, Baird. — Little Black-head. Bare 

 during the migrations. 



237. Fulix collaris, Baird. — Ring-necked Duck. 

 Rare in spring and autumn. This and the three pre- 

 ceding frequent the ponds and rivers of the interior. 



238. Aythya Americana, Bon. — Red-head. Rare 

 in autumn. 



239. Aythya vallisneria, Bon. — Canvas-back. Rare 

 in autumn. Plentiful in Boston markets, but brought 

 from farther south. 



240. Bucephala Americana, Baird. — Golden-Eye, 

 " Whistler." Common during winter. Exceedingly shy. 



241. Bucephala albeola, Baird. — Bujjle-head, " But- 

 ter-ball," " Dipper." Not uncommon in autumn and winter. 



242. Histrionicus torquatus, Bon. — Harlequin 

 Duck, "Lord." Very rare during winter. 



243. Harelda glacialis, Leach. — Long-tailed Duck, 

 " Old Wife," " Old Squaw," " South Southerly." Abun- 

 dant spring and autumn migrant ; some winter. 



244. Camptolaemus Labradorius, Gray. — Labra- 

 dor Duck. Rare during winter. 



245. Melanetta velvetina, Baird. — Velvet Duck, 

 " White-winged Coot," " Butter-bill." Common during win- 

 ter on the coast. 



