763.4. 
764. 
7644. 
PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 
BRACHYRHAMPHUS CRAVERI (SALVAD.) COUES. 
Craver’s Guillemot. 
BRACHYRHAMPHUS BRACHYPTERUS BRANDT. 
Short-winged Guillemot. [734.] 
URIA GRYLLBH (LInN.) BRUNN. 
Black Guillemot. [726.] 
URIA COLUMBA (PALL.) Cass. 
Pigeon Guillemot. [727.]_ 
URIA CARBO (PALL.) GRAY. 
Sooty Guillemot. [728.] 
LOMVIA TROILE (Linn.) BRANDT. 
Common Guillemot. [729,730.] 
LOMVIA TROILE CALIFORNICA (BRYANT) COUES. 
California Guillemot. 
LOMVIA ARRA (PALL.) BP. 
Thick-billed Guillemot. | 
LOMVIA ARRA BRUNNICHI (Scu.) Rew. 
Brunnich’s Guillemot. [731.] 
