﻿212 FIELD AND FOREST. 



214. Mareca americana, (Gmel.) Baldpate. a, b, $ adult. 



215. Querquedula discors, (Linn.) Blue-wing Teal, a, b, rf ad.; c, 9 ad. 



216. Nettion carolinensis, (Gmel.) Green-wing Teal, a, b, (J 1 ad.; c, 9 ad. 



217. Dafila acuta, (Linn.) Pin-tail, a, (J 1 ad.; b, 9 ad. 



218. Spatula clypeatr, (Linn.) Shoveller, a, b, $ ad. ; c, 9 ad. 



219. Aythya americana, Eyton. Red-head, a, p^ad. 



220. Aythya vallisneria, (Wils.) Canvas-back, a, ^ ad. 



221. Bucephala clangula, ft. americana, Bonap. American Golden-eye. a, <$ ad. 



222. Bucephala albeola, (Linn.) Butter-ball, a, 9 a d. ; b, $ ad. 



223. Fulix affinis, Eyton. Lesser Blackhead, a, 9 ad.; b, $ ad. 



224. Fulix collaris, (Donov.) Ring-bill, a, 9 ad. 



225. CEdemia americana, Swains. American Black Scoter, a, $ ad.; [Perfect 

 adult plumage /] 



226. Erismatura rubida, (Wils.) Ruddy Duck, a, rj* ad. 



227. Mergus merganser, ft. americanus Cass. American Buff-breasted Sheldrake, 

 a, rf ad. 



228. Mergus serrator, Linn. Re l-breasted Sheldrake, a, $ juv. ; trasition pi. 



229. Lophodytes cucullatus (Linn.) Hooded Sheldrake, a, <-J* ad. ; b, 9 ad. 



Family PELECANIDJE : Pelicans. 



230. Pelecanus erythrorhynchus, Gmel. American White Pelican, a, juv. 



Family GRACULID.F : Cormorants. 



231. Graculus dilophus, (Swains.) Double-crested Cormorant, a, juv. 



Family COLYMBID^E : Loons. 



232. Colymbus torquatus, Brunn. Great Northern Diver, a, juv. 



Family PODICIPITID^E : Grebes. 



233. Podiceps aurit.is, ft. ciliforaicu?, Lawr. California Grebe, a, ad. ; b, juv. 



234. Podilymbus podiceps, (Linn.) Thick-billed Grebe, a, ad. ; b, 9 ad.; c, d, 

 e, pullus. 



NOTES. 



Archibuteo ferrugineus, (Licht. ) — The collection contains a 

 melanistic specimen of this species, which is a fact of very great inter- 

 est, since this condition is very rarely assumed by the species ; indeed, 

 this example is the first I have ever seen, although very numerous 

 specimens in normal plumage have been examined by me. The fol- 

 lowing is a description of this remarkable specimen : 



General color very dark chocolate-brown, nearly uniform above, 

 where faintly relieved by rufous spots, these most conspicuous on the 

 inner lesser wing-coverts ; occipital feathers snow-white at the base, 

 those of the nape conspicuously edged with ferruginous ; upper tail- 

 coverts irregularly spotted with white and pale rufous ; secondaries 



