GEN. 315-323 OF KEY. 115 



6H. PODILYMBUS PODICEPS (L.) LAWR. 

 Pied-billed l>al>< hi< k. 



615. ALGA IMPENNIS L. 



Oreat Auk. 



[Extinct ?] 



616. UTAMANIA TORDA (L.) LEACH. 



Razor-billed Auk. 



617. FRATERCULA CORNICULATA (NAUM.) GRAY. 



Honied Puffin. 



618. FRATERCULA ARCTICA (L.) STEPH. 



Common Puffin; Sea Parrot. 



618a. PRATERCULA ARCTICA (L.) STEPH., 

 var. GLACIALIS (Leach) Cones. 

 Largre-billed Puffin. 



619. PRATERCULA CIRRHATA (PALL.) STEPH. 



Tufted Puffin. 



620. CERATORHINA MONOCERATA (PALL.) CASS. 



Horn-billed Auk. 



621. PHALERIS PSITTACTJLA (PALL.) TEMM. 



Parroquet Auk. 



622. SIMORHYNCHUS CRISTATELLUS (PALL.) MBRREM. 



Crested Auk. 



623. SIMORHYNCHUS CAMTSCHATICUS (LEPECH,) SCHL. 



Whiskered Auk. 



624. SIMORHYNCHUS PUSILLUS (PALL.) COTTES. 



K^nob-billed Auk; Least Auk. 



626. PTYCHORHAMPHUS ALEUTICUS (PALL.) BRANDT. 

 Aleutian Auk. 



