1. ArrENODTTES. 629 



App. p. 37 (1875) ; Kidder ^ Coues, Bull. U.S. Nat. Mas. no. 2, 



p. 39 (1875) [babits on Kerpfuelen] ; Sclater 8f Salvin, P.Z.S. 

 1878, p. 653 ; Sclater, P. Z. S. 1879, p. 311 [eg<rs from Marion and 

 Herd Is.]; Sharpe,Pk>l. Tram. c\x\in. p. 152 (1879) [Kerguelen]; 

 Sclater Sr Salvin, Vo;/. Chall.,Zool. Birds, p. 122 (1880) [Kerguelen ; 

 Marion I. ; Falkland la.] ; Biiller, B. N. Zeal. 2nd ed. ii. p. 306 

 (1888) [Stewart I.]; Stiider, Forschimgsreise S.M.S. Gazelk, iii. 



Adult. General colour of the upper parts bluish grey as in 

 A. forsteri, but shading into pearl-grey on the back of the neck, 

 shoulders, and upper tail-coverts ; top of the head, cheeks, throat, 

 and upper part of fore-neck deep black with a distinct greenish- 

 yellow gloss ; the black on the fore-neck terminating posteriorly in 

 a point ; a large oval patch of orange-yellow on each side of the 

 head, continued in a narrow band down each side of the throat and 

 dividing the pearly-grey of the back and sides of the neck from the 

 black of the fore-neck ; these orange-yellow bands uniting with one 

 another at the base of the fore-neck gradually widen into a deep 

 orange patch which shades into yellow and disappears on the white 

 breast and underparts ; the pearly-grey sides of the neck closely 

 approach one another on the fore part of the neck, and are edged 

 by a narrow black band which passes down the shoulder, increasing 

 in width as it approaches the base of the flipper ; upper surface of 

 flippers grey like the upper parts, under surface white with a large 

 terminal black patch. As in A. forsteri, the inter-ramal space is 

 entirely feathered, but the basal half of the lower mandible is bare. 

 The feathering on the tarsi does not extend so low down as in the 

 previous species, never covering the base of the outer toe. " Iris 

 bright brown ; tarsus and foot black ; claws black ; upper mandible 

 black, lower mandible black anteriorly, flesh-coloured over the 

 posterior half" (Kidder). 



In two examples the yellow patches on the sides of the head 

 closely approach one another or are confluent on the nape : one of 

 these birds was obtained on the Falkland Islands, the other on the 

 Snares. Probably these specimens are very old birds. 



Total length about 36 inches, culmen from gape to tip 4-7, from 

 nasal feathers to tip 2*4, flipper from shoulder to tip 12, tail 3-2. 



An immature bird differs from the adult in having the orange 

 markings on the sides of the head and throat, and the fore-neck 

 white merely tinged with yellow. 



Young attaining Jirst plumage. Head and neck clothed with 

 smoky-brown down ; plumage of the back and flippers dark bluish 

 grey, intermixed with long down, especially on the siioulders and 

 lower back and, in patches, on the flippers ; chest yellowish, with 

 very long, hair-like, smoky-brown down : rest of the underparts 

 white as in the adult. Total length about 32 inches, culmen from 

 nasal opening to tip 2-3, from gape to tip 4-1, flipper 12. {Mus. 

 Rothschild.) 



