GEN. 315-323 OF KEY. 115 



614. PODILYMBUS PODICEPS (L.) LAWR. 



Pied-billed Dabchick. 



615. ALGA IMPENNIS L. 



Ore at Auk. 



[Extinct ?] 



616. UTAMANIA TORDA (L.) LEACH. 



Razor-billed Auk. 



617. FRATERCULA CORNICULATA (NAUM.) GRAY. 



Horned Puffin. 



618. FRATERCULA ARCTICA (L.) STEPH. 



Common Puffin; Sea Parrot. 



618ca. FRATERCULA ARCTICA (L.) STEPH., 

 var. GLACIALIS (Leach) Coues. 

 !Largre-billed Puffin. 



619. FRATERCULA CIRRHATA (PALL.) STEPH. 



Tufted Puffin. 



620. CERATORHINA MONOCERATA (PALL.) CARS. 



Horn-billed Auk. 



621. PHALERIS PSITTACULA (PALL.) TEMM. 



Parroquet Auk. 



622. SIMORHYttCHUS CRISTATEIJ^US (PALL.) MKRRKM. 



Chested Auk. 



623. SIMORHYNCHUS CAMTSCHATICUS (LEPKH.) SCHL. 



TFlii^kered Auk. 



624. SIMORHYNCHUS PUSILLUS (PALL.) COUES. 



Knob-billed Auk; least Auk. 



625. PTYCHORHAMPHUS ALEUTICUS (PALL.) BRANDT. 



Aleutian Auk. 



