257. Fidix affinu (Eyt.) Baird. 



Little Blackhead. 615. 



258. Fidix coUaris (Donov.) Baird. 



Ring-billed Blackiiead. 616. 



259. ^thyia valUsneria (Wils.) Boie. 



Canvas-back. 617. 



260. ^thyia americana (Eyt.) Bp. 



Redhead. 618. 



261. Clangula glaucmm americana (Bp.) Ridgw. 



American Golden-eye. 620. 



262. Clangula alheola (Linn.) Steph. 



Butterball; Bufflehead. 621. 



263. Harelda glaeialk (Linn.) Leach. 



Long-tailed Duck ; Old Squaw. 623. 



264. Somatcria spectaMlis (Linn.) Boie. 



King Eider. 629. 



265. CEdemia americana Sw. & Rich. 



American Scoter. 630. 



266. Melanetta velvetina (Cass.) Baird. 



American Velvet Scoter. 632. 



267. Urisniatura riibida (Wils.) Bp. 



Ruddy Duck. 634. 



268. Blergus merganser americanus (Cass.) Ridgw. 



American Sheldrake. 636. 



269. Mergus serrator Linn. 



Red-breasted Sheldrake. 637. 



270. Lophodytes euctdlahis (Linn.) Reich. 



Hooded Sheldrake. 638. 



271. Pelecanus crythrorliynclius Gmel. 



American White Pelican. 640. 



272. Plialaerocorax dUoplius (Sw. & Rich.) Nutt. 



Double-crested Cormorant. 643. 



272a. Plialaerocorax dilopus floridanus (Aud.) Ridgw. 

 Florida Cormorant. 643a. 



273. Rissa tridactyla (Linn.) Bp. 



Kittiwake Gull. 658. 



274. Larus leucopterus Faber. 



White-winged Gull. 661. 



275. Lanes marinus Linn. 



Great Black-backed Gull. 663. 



276. Larus argentaius smithsoniamis Coues. 



American Herring Gull. 666a. 



277. Larus delaiuarensis Ord. 



Ring-billed Gull. 669. 



Mar. 23, 75; 11, 77; 6,79. 



Mar. 25, 75; 11, 77; 6,79. 



Mar. 30, 77. 



Mar. 25, 75. 



Mar. 23, Dec. 20, 75 ; 12-15, 76. 



Mar. 25, 75; 6, 77; April 14, 78. 



Dec. 4, 1880. 



Dec. 11, 76 ; Licking Reservoir. 



Dec. 13, 76 ; Licking Reservoir. 



April 27, 73. 



Mar. 19, Nov. 12, 77, 



Nov. 4, 78. 



Mar. 25, 75; 4, 76; 19, 77; Nov. 2, 78. 



Oct. — , 61. 



April 1, 78 ; Licking Reservoir. 



Sept. — , 61. 



Mar. 25, 73; April 22, 75 ; Mar. 30, 76; 2-30, 77; Nov. 4, 78. 



Mar. 3, 77. 



XXV 



