234 
APPENDIX. 
221. Bucephala clangula, j8. americana, (Bonap.) American Golden-eye. 
a, cf ad. 
222. Bucephala albeola, (Linn.) Butter-ball, a, $ a.d. ; b, cf ad. 
223. Fulix affinis, (Eyton.) Lesser Black-head, a, 9 ad. ; b, cf ad. 
224. Fulix collaris, (Donov.) Ring-bill, a, 9 ad. 
225. CEdemia americana, (Swains.; American Black Scoter, a, cf ad. ; 
\Perfect adult plumage /] 
226. Erismatura rubida, (Wils.) Ruddy Duck, a, cf ad. 
227. Mergus merganser, / 3 . americanus. (Cass.) American Buff-breasted 
Sheldrake, a, cf ad. 
228. Mergus serrator, (Linn.) Red-breasted Sheldrake, a, cf juv. ; trans- 
ition pi. 
229. Lophodytes cucullatus, (Linn.) Hooded Sheldrake, a, cf ad. ; b, 9 
ad. 
Family PELECANID^ : Pelicans. 
230. Pelecanus erythrorhynchus, (Gmel.) American White Pelican, a, 
juv. 
Family GRACULID^E : Cormorants. 
231. Graculus dilophus, (Swains.) Double-crested Cormorant, a, juv. 
Family COLYMBID^E : Loons. 
232. Colymbus torquatus, (Brunn.) Great Northern Diver, a, juv. 
Family PODICIPITIDyE : Grebes. 
233. Podiceps auritus, j8 californicus, (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 interest, 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 following is a description of this 
remarkable specimen : 
General color very dark chocolate-brown, nearly uniform 
above, where faintly relieved by rufous spots, these most con- 
spicuous 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 crossed by wide but indis- 
tinct bands of silvery plumbeous; outer webs of primaries bright 
silvery-gray, more obscure on the inner quills. Tail, pearl-gray, 
(the middle portion of each feather whitish, the inner webs 
chiefly white,) finely sprinkled at the end and toward base with 
darker gray ; the shafts pure white for their whole length. 
