206 PROCEEDINGS OF THE ACADEMY OP 



Indeed, I am not sure that differences of age or season or special 

 conditions of plumage may not be the sole basis of the supposed 

 species. 



EUDYPTES DIADEMATUS, Gould. 



Eudyptes diadematus, Gould, P. Z. S. 1860, 419. Schlegel, Urin. M. 

 P.-B. 18G6, 9me, 8. Gkay, Hand-list, iii. 1871, 98. 



Habitat. Ins. Falldandicis. Nova Zealandia. 



Eud. cbrysolopbre et cbrysocomse similis, sed major, notoeo obscuriore, 

 fusco vix griseo-co3i'uleo lavato, pluinis superciliaribus necnon frontalibus 

 flavissimis, bis nigro-lineatis, illis breviusculis, rectis. 



No. 59,241, Mus. Smiths., adult, in perfect plumage, from the 

 Falkland Islands, received under the name of " Eud. chrysolopha." 

 The upper parts are very dark, with barely a trace of dull pen- 

 guin-blue in some places, in others, as on the head, none at all. 

 (In these respects quite different from its nearest ally, chrysolo- 

 pha.) The intense yellow plumes, very slender, and perfectly 

 straight, reach hardly an inch beyond the sides of the occiput 

 (they are longer, curly, and not so yellow, in the other species) ; 

 and on the forehead they coalesce to form a large orange spot, 

 with sharp black lines, the terminal half of each feather being 

 black. (In all the other three crested species the lateral bundles 

 of yellow plumes remain strictly separate.) The other feathers 

 of the crown are perfectly black, and not much lengthened. Bill 

 larger and more robust than in the other crested species ; nasal 

 groove very strongly impressed, dividing the maxilla into the 

 broad, depressed, culminal part, and the bulging tomial portions ; 

 on the under mandible the feathers ascend backwards from their 

 point of extension between the rami, as usual, but do not reach 

 the tomia at all, but retreat to the very angle of the mouth ; while 

 the corneous part of the mandible is defined along the line of 

 these feathers by a raised border. Chord of culmen 2.25 ; gape 

 2.50 ; from antite to tip of bill 1.75 ; height of bill opposite base 

 of culmen 1.15; width do. .85 ; wing nearly 8 ; tail 5.25; tarsus 

 about 1 ; middle toe and claw 2.75 ; whole length of the dried 

 skin, apparently not stretched, 2 feet. 



No. . . . Mus. Acad., Philada. No locality given. Adult ; as 

 stuffed, stands 22 inches high ; chord of culmen 2.15 ; gape 2.15, 

 but not quite 1 deep at deepest place; tail about 4^; wing 8. 

 Similar to the Smithsonian specimen. 



