18. BRANTA. 



IJl 



c-f- 6 $ ad. et S Yukon Delta, Alaska, JMav, Salvin-i^odman Uoll 



imni. sk. June {E. W. Nelson). 



9,h,t. Sad.etrf .St. Michael's, Alaska, June, Salvin-Godman Coll. 



]uv. sk. Sept. {E. W. N.). 



k. Imm. sk. Ugashik, .-Uaska (C. Z. Salvin-Godman Coll. 



McKay). 



18. BRANTA. 



Branta Scop. Ann. I. Hist. Nat. p. 07 (1760) B. birnicla. 



Bernicla, Boie, I.sis, 18i'2, pp. 5(J3, 883; Steph. Gen 

 Zool xii. 2, p. 4.5 (18i'4) (ex Brisso7i, Om. vi.p. 300, 

 1/60) V. , . , 



Leucopareia, i?c/^«i." Av.' S„st' Nat p.' ix '(1852) .' .' ." .' .' .' B.' leuTopJs. 



Kuhbrenta, Bp. Compt. Rend, xliii. p. 648 (subgen.) 



T 'i , 1 ;,'■.; J : B. ruficollis. 



L,uucoblepharon, Bntnl, Birds ofN. Am. p. 763 (subo-en 



(1858) (ne^c Leucoblephara, Lafr. 1840) " . . . B. canadensis. 



Brenthus, Sunder. Met/,, nat. Ar. disp. Tent. p. U') 



(1873) (nom. emend, ex Aristot.) (nee Schonh. 1826) 

 Ptocas, Heine, Nom. Mus. Uein. Om. p. 342 (1890) 



(= Rufibrenta). 



Range. Palaearctic and Xearctic regions. 



Key to the Species. 



a. No chestnut colour on the hreast. 



«'. Upper tail-coverts normal, confined to the 

 base of the tail : iiead partly white. 

 a". 11. 'nd black, with a somewhat trianirular 

 white patch on each cheek, usually 

 confluent on throat : chest brownish like 

 breast and belly. 

 «'". Wing more than 14'50 inches. 



a\ Lower parts fading gradually into \ canadensis 



, ^vl"te on anal region l \'hutchinsi(i 



l> . Lower parts greyish brown, abruptly 

 ,,„ „,.*^'^<^"«''^ »^^i"f white of anal region. . occidentalis 

 o . \\ ing not more than 14-50 inches, usually 



less • • 



b . Head mostly wjnte ; the lores, occiput 



neck, and chest black .^ .' l^^copsis, p 



^. Upper tail-coverts very long, reachiuff the tip 

 of the tail-feathers; head entirely black, 

 e". Sides of the neck with two patches of white 

 streaks on each side, usually not meeting 

 in front; lower parts greyish, in con- 

 spicuous and abriijjt contrast with black 

 ot chest ; or dark brown, but sufliciently 

 .„ rr,/^'^''':f '''-"m/he black ot the chest . . .\ bernicla, p. 

 d . 1 he white patches on the .sides of the neck 

 constantly meeting in front, so as to form 



p. 112. 

 ),p.ll4. 

 [p. 116. 



(?), 



116. 

 . 117. 



119. 



