NATATORES. 349 



Ocean. It appears to be widely diffused in the northern countries of 

 both continents. 



4. Genus CERATORHYNCHA, Bonaparte. 



1. Ceratorhyncha monocerata {Pallas). — The Horn-billed 



Guillemot. 



Alca monocerata, PaLL. Zoog. Ross. Asiat. 11, p. 3G2 (1811). 

 Phaleris cerorhyncJia, BoNAP. Zool. Jour. Ill, p. 53 (1827). 

 Cerorhyncha occidental is, BoNAP. Ann. N. Y. Lyceum, II, p. 428 (1827). 

 Ceratorhyncha occidentalis, BoNAP. Comp. List. p. 66. 

 Chimerina cornuta, EsCHSCH. Zool. Atlas, Pt. Ill, p. 2 (1829). 



Eschscholtz, Zool. Atlas, Plate XII; Aud. B. of Am. Plate CCCCII, 

 fig. 5; oct. ed. VII, CCCCLXXI. 



One specimen only of this bird, in immature plumage, is in the col- 

 lection, and was obtained on the northwest coast of America. Mr. 

 Peale notes, that the knob on the bill and lower mandible were orange 

 color, " a black line along the culmen ; legs orange-colored, the toe 

 membranes and nails black." 



Very fine specimens of this curious bird, now in the National Col- 

 lection, were brought from J apan, by the United States Expedition to 

 that Empire, commanded by Captain M. C. Perry, United States 

 Navy. 



5. Genus APTENODYTES, Forster. 



1. Aptenodttes patachonica, Forster. —The Patagonian Penguin. 



The Great Penguin. 



Aptenodytes patachonica, Forster, Comment. Gottingensis, III, p. 137 (1781). 

 '■^ Aptenodytes patagonica, MiLLER, 111. Hist. Nat. tab. XX," Forster, ixt supra. 

 Aptenodytes Forsteri, G. R. GraY, Ann. and Mag. Nat. Hist. 1844, p. 315. 



Shaw and Mill. Cim. Phys. Plate XXIII (second edition) ; Shaw, 



