458 G. E. Verrill — So'ine Birds and Eggs collected at 



down on the neck in a triangular shape in this species, while in 

 chrysoco'me it runs nearly straight across. 



Chrysolophus is also a larger bird than chrysocome, but size i& 

 apparently a poor guide to species among penguins, being very 

 variable in the same species, as is shown in the table, p. 461. 



Mr. Comer writes : " Macaroni Penguins are much larger than 

 the Rock Hoppers, and their top-knots are a brighter, stronger yellow 

 than the Rock Hoppers whose top-knot is pale yellow. Dark yellow 

 beaks. Bright yellow top-knots with a few long black feathers 

 mixed with them. Top of the feet white, bottom black. Pupil of 

 eye dark with a bright, brick-red rim. Lay two eggs, and when these 

 are taken will lay others. They lay in among rocks and tumbled 

 down boulders, often in the same rookery with the Rock Hoppers 

 (Christmas Harbor, Kerguelen Island). Quite difficult to get at 

 their nests, which are built of mud and stones. Commence laying 

 about the 20th of November." 



The eggs from Kerguelen measure 2*92 X 2*22 and 3"04x2'10, and 

 are shaped and look, with the exception of the color, much like a 

 hen's Qgg, one being regularly ovate, the other tending to spheroidal 

 ovate in form. The outer surface of the shell is hard and smooth 

 with shallow depressions and is very pale bluish in color, and in one 

 specimen is covered with a thin, dirty yellowish-white, calcareous 

 deposit, the other has only a few traces of it. The ^gg from South 

 Georgia measures 3'13X2"30, is regularly ovate in shape, and closely 

 resembles the two others, except that it has very little trace of the 

 thin calcareous layer on the outside. 



20. Eudyptes chrysoconie (Forst.). "Rock-Hopper Penguin." 



Aptenodytes chrysoconie Forster, JSTov. Comm. Gott., vol. iii, 1781, p. 135, pi. i; Gm,, 

 Sys. Nat., vol. i, p. 555. 



Caiarhactes chrysocome Brandt, Bull. Acad. St. Pet., vol. ii, 1837, p. 315. 



Eudijptes chrysocome Scl., P. Z. S., 1860, p. 390; Pelzeln, Reise der Novara, Yogel, 

 1869, p. 140, pi. v; Coues, Proc. Acad. Nat. Sci., Phila., 1872, p. 202; Scl. et 

 Salv., F. Z. S., 1878, p. 654; iid., Voy. of Ghal, Zool, vol. ii, 1881, p. 128, pi. 



XXX. 



E. nigrivestis Gould, P. Z. S., 1860, p. 418; Scl, op. cit., 1861, p. 46. 



Spheniscus chrysocome Schl., Mus. P.-B., Urin., p. 6, 1866. 



E. catarractes Coues, Proc. Acad. Nat. Sci., Phila., 1872, p. 201. 



E. chrysolopha {neo Brandt) Coues, Proc. Acad. Nat. Sci., Phila., 1872, p. 204; id., 

 Bull. U. S. Nat. Mus., No. 2, p. 45; id. et Kidder, op. cit, No. 3, p. 19. 



E. saltator Sharpe, Philos. Trans. Roy. Soc, vol. 168, 1879, p. 160, pi. viii, fig. 1. 



Catarractes demersus Stejneger, Stand. Nat. Hist, vol. iv, 1885, p. 63, fig. 28, 

 (after Brehm). 



