6G2. LARUS OCCroENTALIS, Aud. 

 f^esteru Gull. 



663. LARUS CALIFORNICUS, Lawb, 



California Gull. 



664. LARUS DELAWARENSIS, Ord. 



Rin^-billed Gull. 

 564a. LARUS BRACHYRHYNCHUS, Rich, 

 Sbort-bllled Gull. 



665. LARUS SUCKLEYI, Lawk. 



Suckley's Gull. 

 6G6. BLASIPUS HEERMANNI, Bonap. 

 White-lieaded Gull. 



667. CHROICOCEPHALUS ATRICILLA, Linn. 



l.augbin^ Gull. 



668. CHROICOCEPHALUS FRANKLINII, Bru. 



Franklin's Rosy Gull. 



669. CHROICOCEPHALUS CUCULLATUS, Br. 



Hooded Gull. 



670. CHROICOCEPHALUS PHILADELPHIA, 



Bonaparte's Gull. 



671. CHROICOCEPHALUS MINUTUS, Bruch. 



L.ittle Gull. 



672. RISSA TRIDACTYLA, Bonap. 



Hittiirake Gull. 



673. RISSA SEPTENTRIONALIS, Lawb. 



IVorth Pacific Kittiivake. 



674. RISSA BREVIROSTRIS, Brandt. 



Sbort-billed Kittiwake. 



675. RISSA NIVEA, Bruch. 

 Yellow-billed GulL 



676. PAGOPHILA EBURNEA, Kaup. 



Ivory Gull. 



677. PAGOPHILA BRACHYTARSI, Holb. 



Sbort-le^ged Gull. 



678. RHODOSTETHIA ROSEA, Jard. 



tTed^e-tailed Gull. 



679. CREAGRUS FURCATUS, Bonap. 



S^valloi>T-tailed Gull. 



680. XEMA SABINH, Bonap. 



Fork-tailed Gull. 



C8L STERNA ARANEA. Wil.9. 



Marsh Tern. 

 G82. STERNA CASPIA, Ballas. 



Caspian Tern. 



683. STERNA REGIA, Gambel. 



Royal Tern. 



684. STERNA ELEGANS, Gambel. 



Elegant Tern. 



685. STERNA ACUFLAVIDA, Cabot. 



Cabot's Tern. 



686. STERNA HAVELLI, Aud. 



Uavell's Tern. 



687. STERNA TRUDEAUII, Aud. 



Trudeau's Tern. 



688. STERNA FULIGINOSA, Gm. 



Sooty Tern. 



689. STERNA WILSONI, Bonap. 



TVilson's Tern. 

 G90. STERNA MACROURA, Naum. 

 Arctic Tern. 



691. STERNA FORSTERI, Nutt. 



Forster's Tern. 



692. STERNA PARADISE A, Brunn 



Roseate Tern. 



693. STERNA PIKEI, Lawr. 

 Slender-billed Tern. 



694. STERNA FRENATA, Gambel. 



Least Tern. 



695. HYDROCHELIDON PLUMBEA, Wils 



Sbort-tailed Tern. 



696. ANOUS STOLIDUS, Leach. 



Noddy Tern. 



697. RHYNCHOPS NIGRA, Linn. 



Black Skimmer. 



698. COLYMBUS TORQUATUS, Brunn. 



L.oon. 



699. COLYMBUS ARCTICUS, Linn. 



Black -tbroated Diver. 



700. COLYMBUS PACIFICUS, Lawr. 



Pacific Diver. 



