642 IMPENNES. 



Sclater, P. Z. S. 1870, p. 311 [eggs from Falkland Is. and Ker- 

 guelen Land] ; Slmiye, Pltil. Trans, clxviii. p. 157, pi. viii. fig. 2 

 (187!)) ; Sclater !^ Salvin, Toy. Chall., Zool., Birds, p. 127, pi. xxix. 

 (1880) [Kerg-uelen] ; M.-Edwards, An?i. Sci. Nat. (6) ix. pi. 17. 

 fig. 1 (1880) ; Studer, Forschungsreise S.M.S. Gazelle, iii. p. 105 

 (1889) [Heard I.; Marion I.; Prince Edward I.]; Sfeineyi, 

 Internal. Polarforsch. Deutschen TLxped, ii. p. 277 (1890) [South 

 Georgia]. 



PEudyptes diadematua*, Gould, P. Z. S. ISfiO, p. 419 [Falkland Is.] ; 

 Sclater, P. Z. S. 1861 , p. 46 ; Abbott, Ibis, 1861, p. 163 ; Gould, 

 Ann. Mag. N. If. (3) rii. p. 218 (1861) ; Cones, P. Ac. Philad. 

 1872, p. 206 [part, Falkland Is.] ; Kidder S,- Coues, Bull. U.S. Kat. 

 Mus. ii. p. 47 (1875) [Kerguelen & Heard I.j. 



Spbeniscus diadematus, Schlegel, Mus. Pays-Bai, vi. Uiinat. p. 8 

 (1867) [part, Falklands]. 



Adult. General colour of i;pper parts as in C. vhrysocome ; fore- 

 head and back of the crown black ; feathers of the middle and sides of 

 the crown golden orange at the base with lengthened pointed black 

 extremities, only the longest plumes of the superciliary feathers 

 much lengthened (nearly three inches) and uniform orange ; sides 

 of head, chin, and throat .smoky-black ; the throat with a distinct 

 silvery shade ; rest of the underparts white. The upper surface of 

 the flipper like the back, and edged internally with white ; below 

 white, blackish along the outer margin, especially tow ards the tip, 

 and with a black patch at the base of the inner margin. 



In some specimens there is a well-marked patch of whitish 

 feathers in the middle of the upper tail-coverts. Bill of the same 

 type as that of C. 2'>achyrhynchus. Tail composed of 14 feathers. 

 Total length about 30 inches. 



Immature birds differ only from the adult in having the basal 

 part of the feathers of the crown and superciliaries more yellow 

 and the bill very much smaller. 



Bill. 



Hah. Falkland Islands, South Georgia, Prince Edward I., 

 Marion I., Kerguelen Land and Heard I. 



a,b. c? 2 ad. sk. Christmas Harbour, Kerguelen, ' Challenger ' Exped. 



Jan. 7. 

 c. Ad. sk. [pale Christmas Harbour, Kerguelen, ' Challenger ' Exped. 

 variety]. Jan. 7. 



* In this species the chrome-jellow eyebrow-stripes are said to commence at 

 the nostrils. This is not the case in any specimen of C. chrysolophus which 

 I have examined. Possibly, as Mr. Sclater has suggested, it may be a variety 

 of this species. 



