102 PROCEEDINGS OF THE ACADEMY OF 



IY. DETERMINATION OF THE SPECIES. 



APTENODYTES PATAGONICA, Forst. 



Aptenodytes patachonica, Forst., Comm. Soc. Eeg. Sc. Gotting. iii. 1781, 

 137, pi. 2. Gm., S. N. i. 1788, 556 (in part : confounds the two species). 

 Lath., Ind. Orn. ii. 1790, 878 (in part : same as Gmelin's). 



Spheniscus patagonicus, Schleg., Mus. P.-B. livr. 9me. 1866, Urin, p. 3. 



Aptenodytes forsteri, Gray., Ann. Nat. Hist. 1844, 315; Handl. iii. 99. 



Aptenodytes imperator, Bonap. 



Pennant, Gen. of B. pi. 14 ; T. F. Miller, 111. Nat. Hist. pi. 20. 



Habitat. Maribus antarcticis. 



Maximus inter omnes ; maxilla ultra medium ptilosa, tarsis antice lateri- 

 busque mandibular magna ex parte ptilosis ; rostro pedibusque crassiusculis 

 pro genere Aptenodytis, ung'uibus maximis obtusissimis : notseo nigro et 

 cceruleo permixto, gastrseo albo, gula nigricante, ea pictura infra cordiforme; 

 lateribus colli flavicantibus, summa parte flavissima, necnon stria nigra 

 bnmeris anteducta notatis, rostro pedibusque nigris, lateribus mandibular 

 erubescentibus. 



Mus. Smiths. No. 15,666, adult, taken Januaiy 23, 1840, in lat. 

 66 52' S., long. 150 25' E. from Greenwich; H. Eld, 17. S. 

 Expl. Exped.: basis of Peale, pp. 258, 335, sp. No. 691, and of 

 Cassin, pp. 349, 450, sp. No. 681. This specimen, as mounted, 

 stands about 3|- feet high, but appears somewhat overstuffed; 

 wing 14 inches, tail about 3, bill along culmen 3, along gape 

 almost 5, from antiaa to tip of bill 2. The bill is feathered beyond 

 its middle, the antire reaching more than half-way from angle of 

 the mouth to tip, and these feathers conceal the maxillar tomia 

 for a srreat distance. On the under mandible the feathers com- 

 pletely fill the interramal space, and also cover much of the side 

 of the lower mandible, leaving, towards the base, only the ex- 

 panded and colored edge of the mandible naked. The tarsi are 

 entirely covered with feathers, which furthermore overlie the toes 

 for some distance ; but on]y a part of the tarsus is implanted 

 with feathers, the rest being reticulate with small six-sided plates, 

 as are also the upper surfaces of the toes, except just at the end, 

 where there are 2-3 annular scales. The hallux is minute, rela- 

 tively smaller than in any other species, and almost perfectly 

 antrorse ; the lateral toes are sub-equal to each other, but the 2d 

 is a little shorter than the 4th ; the tips of the claws of both 

 overreach the base of the 3d claw. Claws enormously stout and 

 blunt; 2d 1.20, 3d 1.50, 4th 1.25 long. This bird appears to be 



