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 Duck. 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. Rare 

 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. - - Buffle-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. Camptolcemus 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. 



