[29] FISHERIES OF THE UNITED STATES. 167 



655. PEiaethora aetherews Linn. Bed-billed Tropic Bird. 



Tropical seas; north to Gulf of California, West 

 Indies, and, casually, to Newfoundland Banks. 



a. No. 74033. $ ad. Saint Vincent, West Indies ; F. A. Ober. 

 i. No. 89947. Juv. Saint Eustatius, West Indies ; F. A. Ober. 



Order GAVIiE. — The Gull-bike Swimmebs. 

 Family RHYNCHOPSID^.— The Skimmers. 



656. Rhynchops nigra Linn. Black Skimmer. [697.] Sea- 



coasts of tropical and warm-temperate America; 

 north along Atlantic coast of United States to New 

 Jersey and (casually) to Maine. 



*a. No. 89269. $ ad. Cobb's Island, Virginia, July, 1880; R. Ridg- 



way. 

 *b. No. 80248. 9 ad. Cobb's Island, Virginia, July, 1880; R. Ridg- 



way. 

 *c. No. 80249. Pullus. Bone Island, Virginia, July, 1880 ; R. Ridgway. 



Family LARID^E.— The Gull Tribe. 



657. Pagophila efournea (Phipps). Ivory Gull. [076,077.] 



Oircumpolar regions; south, in winter, along- Atlan tic 

 coast of North America to Newfoundland and New 

 Brunswick. 



«. No. 76236. $ juv. Cumberland Gulf, 1877 ; L. Kumlien. 



658. Rissa tridactyla (Linn.). Kittiwake Gull. [072.] 



Coasts and islands of North Atlantic; south, in 

 winter, to Middle States and Great Lakes. 



*a. No. 79134 $ ad. Davis Straits, July 26, 1879; N. P. Scudder. 

 b. No. 79138. 9 juv. Davis Straits, August 16,1879; N. P. Scudder. 



658a. Rissa tridactyla kotzebisei (Bp.). Pacific Kitti- 

 wake. North Pacific Ocean, including islands and 

 coasts of Alaska; west to Kamschatka and Com- 

 mander Islands, north to the Arctic Ocean. 



659. Rissa brevirostris (Brandt). Bed-legged Kittiwake. 



[674, 675.] Shores and islands of North Pacific (on 

 both sides); in Alaska, throughout Aleutian chain 

 and on Prybilov Islands. 



*a. No. 64371. $ ad. Saint George's Island, Alaska; H. W. Elliott. 



*&. No. 64365. 9 ad. Saint George's Island, Alaska; H. W. Elliott, 



c No. 73149. $ juv. Saint Michael's, Alaska, September 18, 1876; L. 

 M. Turner. 



