GEN. 315-323 OP KEY. 115 



eu. PODILTMBirS PODICEPS (L.) Lawk. 

 Pied-billed Dabcbick. 



615. ALCA IMPENNIS L. 



Oreat Auk. 



[Extinct ?] 



616. UTAMANIA TOBDA (L.) Leach. 



Razor-billed Auk. 



617. PBATERCULA CORlflCIJLATA (Naum.) Gbat. 



Sorned Puffin. 



618. FRATERCULA ARCTICA (L.) Steph. 



Common Puffin; Sea Parrot. 



618a. PRATERCiriiA ARCTICA (L.) Steph., 

 var. glaciaus (Leach) Coues. 

 Irarg-e-billed Puffin. 



619. FRATERCULA CIRRHATA (Pall.) Steph. 



Tufted Puffin. 



620. CERATORHINA MOWOCERATA (Pall.) Cass. 



Korn-billed Auk. 



621. PHALERIS PSITTACTJLA (Pall.) Tbmm. 



Parroquet Auk. 



622. SIMORHYWCHUS CRISTATELLTJS (Pall.) Mkerkm. 



Crested Auk. 



628. SIMORHTNCHUS CAMTSCHATICUS (Lbpbch.) Schl. 

 "Vf^taiskered Auk. 



624. SIMORHYWCHirS PUSIIiIiUS (Pall.) Cotjus. 



Itnob-bllled Auk; Xieast Auk. 



625. PTYCHORHAMPHTJS ALEITTICUS (Pall.) Bhandt. 



Aleutian Auk. 



