206 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



6-15. PHALACROCORAX PENICILLATUS (Bkandt) Heerm. 

 Brandt's Cormorant. [626.] 



646. PHALACROCORAX VIOLACBUS (Gmel.) Eidgw. 



Violet-green Cormorant. [627.] 



646a. PHALACROCORAX VIOLACEUS RESPLENDENS (AUD.) Kidgw. 

 Baird's Cormorant. 



647. PHALACROCORAX BICRISTATUS Pall. 



Red-faced Cormorant. 



648. PHALACROCORAX PERSPICILLATUS Pall. 



Pallas's Cormorant. [621.] 



649. PLOTUS ANHINGA Linn. 



American Anhinga; Snake Bird. [628.] 



650. SULA BASSANA (Linn.) Briss. 



Gannet. [617.] 



651. SULA CYANOPS Sundev. 



Blue-faced Gannet. 



652. SULA LBUCOGASTRA (BODD.) Salv. 



Booby Gannet. [618.] 



653. SULA PISCATOR (Linn.) Bp. 



Red-footed Booby. 



654. PHAETHON FLAVIROSTRIS Brandt. 



Yellow-biUed Tropic Bird. [629.] 



655. PHAETHON iETHEREUS Linn. 



Red-billed Tropic Bird. 



656. RHYNCHOPS NIGRA Linn. 



Black Skimmer. [697.] 



657. PAGOPHILA EBURNEA (Phipps) Kaup. 



Ivory Gull. [676,677.] . 



658. RISSA TRIDACTYLA (Linn.) Bp. 



Kittiwake Gull. [672.] 



658rt. RISSA TRIDACTYLA KOTZBUEI (Bp.) COUES. 

 Pacific Kittiwake. 



659. RISSA BREVIROSTRIS Brandt. 



Red-legged Kittiwake. [674,675.] 



660. LARUS GLAUCUS Brunn. 



Glaucous Gull; Burgomaster. [656.] 



661. LARUS LEUCOPTERUS Faber. 



White-winged Gull. [658.] 



6G2. LARUS GLAUCESCENS Light. 



Glaucous- winged Gull. [657,659.] 



