PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 211 



739. COLYMBUS PACIFICUS Lawk. 



Pacific Diver. [700. ] 



740. COLYMBUS SEPTENTRIONALIS Linn. 



Red-throated Diver. [701.] 



741. ALCA IMPENNIS Linn. 



Great Auk. [710.] 



742. UTAMANIA TORDA (Linn.) Lkach. 



Razor-billed Auk. [711.] 



74:3. FRATERCULA ARCTICA (Linn.) Steph. 

 Common Puffin. [71.5,710.] 



743 fl. FRATERCULA ARCTICA GLACIALIS (Leacii) Kidgw. 

 Large-billed Puffin. [714.] 



744. FRATERCULA CORNICULATA (Naum.) Gray. 



Horned Puffin. [713.] 



745. LUNDA CIRRHATA 1'all. 



Tufted Puffin. [712.] 



740. CERATORHINA MONOCERATA (Pall.) Cass. 

 Horn-billed Puffin. [717, 71H.] 



747. PHALERIS PSITTACULA (Pall.) Temm. 



Parrot Auk. [72').] 



748. SIMORHYNCHUS CRIST ATELLUS (Pall.) Merrem. 



Crested Auk. [719, 720. ] 



749. SIMORHYNCHUS PYGMiEUS(GMEL.)RiDGW. 



Whiskered Auk. [721 . ] 



750. CICERONI A PUSILLA( Pall.) Kidgw. 



Least Auk. [722,723.] 



751. PTYCORHAMPHUS ALEUTICUS (Pall.) Brandt. 



Cassin's Aulc [724.] 



752. ALLE NIGRICANS Link. 



Sea Dove; Dovekie. [738.] 



753. SYNTHLIBORHAMPHUS ANTIQUUS(Gm.) CoUES. 



Black-throated Guillemot. [73().] 



754. SYNTHLIBORHAMPHUS WURMIZUSUME (Te.mm.) Coues. 



Temminok's Guillemot. [737.] 



755. BRACHYRAMPHUS MARMORATUS (Gm.) Brandt. 



Marbled Guillemot. [732, 733. ] 



756. BRACHYRHAMPHUS KITTLITZI Brandt. 



Kittlitz's Guillemot. [735.] 



757. BRACHYRHAMPHUS HYPOLEUCUS Xantus. 



Xantus's Guillemot. 



