586	APPENDIX.

WHITE-WINGED GULL.	Larus leucopterus. Y. O.
HERRING GULL.	Larus argentatus. Y. O.
WHITE GULL.	Larus Hutchinsii. Y.
Northern Gull.	Larus borealis. Y.
SHORT-BILLED GULL.	Larus brachyrhynchus. t O.
BONAPARTE'S GULL.	Chroicocephalus philadelphia. t
KITTIWAKE.	Rissa tridactyla. t
Red footed Kittiwake.	Rissa brevirostris Brandt not auct.
SABINE'S GULL.	Xema Sabinii. Y.	[St. George's.
ARCTIC TERN.	Sterna macroura. t O.
White-tailed Tern.	Sterna aleutica Baird, n. s. K. O.
SHORT-TAILED TERN.	Hydrochelidon fissipes. Y. O.
LOON.	Colymbus torquatus. Y. O.
ARCTIC DIVER.	Colymbus arcticus. Y. O.
ADAMS' DIVER.	Colymbus Adamsii. K.
RED-THROATED DIVER.	Colymbus septentrionalis. Y.
RED-NECKED GREBE.	Podiceps griseigena. Y. O.
HORNED GREBE.	Podiceps cornutus. Y. O.
TUFTED PUFFIN.	Mormon cirrhata. t
WHITE-BREASTED PUFFIN.	Mormon corniculata. t
LABRADOR AUK.	Sagmatorrhina labradoria. K.
HORNBILL.	Cerorhina monocerata. S.
CRESTED AUK.	Phaleris cristatella. K.
LITTLE AUK.	Phaleris microceros. Y. K.
DUSKY Aux.	Phaleris tetracula. Bering Strait.
LEAST AUK.	Phaleris pusilla. Aliaska.
Cassin's Auk.	Simorhynchus Cassini Coues, n. s. Ounimak Pass.
GUILLEMOT.	Uria Columba. t O.
FOOLISH GUILLEMOT.	Uria lomvia. K.
CALIFORNIAN MURRE.	Uria californica. S. K. O.
THICK-BILLED MURRE.	Uria arra. K. St. George's Island.
MARBLED GUILLEMOT.	Brachyrhamphus marmoratus. S.
WRANGELL'S GUILLEMOT.	Brachyrhamphus Wrangellii. S. [S.
ANCIENT AUK.	Brachyrhamphus antiquus. Aliaska.
The above refers only to the species actually collected. Sundry others were observed, but not obtained, as the hooded merganser and the European lapwing; but it was considered best to catalogue only those actually brought home. Many of which the eggs were not obtained were known to breed. Future collectors may be expected to make additions, both to the number of known birds inhabiting the country, and the knowledge of their geographical distribution.