GEN. 247-250 OF KEY, 93 



477. CYGNUS AMEBICANUS Sharplbss. 



"f^liistling- Swan. 



478. ANSEE ALBIPRONS Gm., 



var. GAMBBLi (.Hartl.) Cs. 

 American IVlitte-fronted Croose. 



479? ANSEB CJERULESCENS L. 

 Blue Croose. 



480. AN"SER HYPERBOREUS Pall. 



Snonr Ooose. 



480a. ANSEB HYPERBOREUS Pall., 

 var. albatus (Cass.) Cs. 

 liesser Snow Croose. 



481. ANSER ROSSII Bd. 



Ross' Coose. 



482. PHILACTE CAITAGICA (Sevast.) Bans. 



Fainted Ooose. 



[483.] BRANTA LEUCOPSIS (L.). 

 Barnacle Ooose. 



484. BRANTA BERNICLA (L.). 



Brant Ooose. 



485. BRANTA CANADENSIS (L.). 

 Canada Ooose ; fTild CJoose. 



485a. BRANTA CANADENSIS (L.), 

 var. LEucoPAKEiA (Brandt) Cs. 

 'Vritite-collared Ooose. 



485b. BRANTA CANADENSIS (L.), 

 var. HUTCHiNsii (Rich.) Cs. 

 Hutcliinis' Qoose. 



