DIOMEDEA. 51 



Wing 26.50-29.00 inches ; total length, 44.00-55.00, extent, 125.00-130.00. 

 Adult : White, the remiges blackish. Young : Dusky, with fore part of 

 the head whitish (older individuals with more white, according to age). 

 Egg 4.95 X 3.15, white, minutely sprinkled over large end with brownish 

 (adventitious stain in pores of shell ?). Hab. Southern seas in general, 

 north, casually or very irregularly, to Florida (Tampa Bay) and coast 

 of Washington Territory. 



— . D. exulans Linn. Wandering Albatross.^ 

 Culmen slightly concave, the bill more compressed ; feathers at base of maxilla 

 extending in a nearly straight obliquely transverse line far back of the nasal 

 tube, those at the base of the lower mandible also extending nearly straight 

 across. 

 h^. Lateral division of the bill narrower at base than in the middle. (Sub- 

 genus Phcebastria Eeich.^) 

 c\ Length 28.50-36.00, wing 18.50-20.50, culmen 4.00-4.25, depth of bill at 

 base 1.45-1.60, tarsus 3.50-3.70, middle toe 4.05-4.40. Adult : Uni- 

 form dusky, more grayish below, the tail-coverts, base of tail, and 

 anterior portion of the head white ; bill dusky purplish brown ; feet 

 black. Young : Similar to adult, but upper tail-coverts dusky, and 

 white of head more restricted (sometimes almost obsolete). Hab. 

 North Pacific ; on the American side, from coast of California 

 (very abundant) to Alaska. 



81. D. nigripes Aud. Black-footed Albatross. 

 c\ Length 33.00-37.00, wing 22.00-23.00, culmen 5.50-5.G0, depth of bill 



at base 1.95-2.05, tarsus 3.80^.00, middle toe 4.65-4.90. Adult: 

 White, becoming straw-yellow on head and neck ; tail-feathers, 

 remiges, etc, slaty brown, the primaries with yellow shafts. Young : 

 Uniform sooty or dusky, the head and neck nearly black ; shafts of 

 primaries straw-yellow ; bill and feet pale brownish. Hab. North 

 Pacific ; on the American side occurring from California to Alaska, 

 but chiefly northward. 



82. D. albatrus Pall. Short-tailed Albatross. 

 P. Lateral division of bill broader at base than in middle. (Subgenus Thalas- 



sarche Eeich.') 

 c\ Lower parts white ; upper parts plain dusky. 



d^. Under wing-coverts chiefly, or in large part, white. Adult (and 

 young f) : He.ad, neck, rump, upper tail-coverts, and entire 

 lower parts white, the sides of the head with a more or less 

 distinct grayish stripe, darkest near the eye ; back and scapu- 

 lars brownish slate, more ashy anteriorly, the wings plain 

 dusk}^ ; color of bill varying from pale 5-ellowish in adult to 

 dark horn-color in young; wing 19.50-20.50, tail 8.00-8.50, 



1 Diomedea exulans Linn., S. N. ed. 10, i. 175S, 132. 



2 Phcebastria Reich., Syst. Av. 1S52, p. v. Type, Diomedea hrachyura Temm., = D. albatrus Pall. 

 ' Thalassarche Reich., Syst. Av. 1852, p. v. Type, Diomedea melano^ihrys BoiE. 



