THE ARCTIC JAGER. 195 



moderate length, excepting the two middle, which are extremely elongated 

 and gradually attenuated, the rest broad and rounded, there being twelve 

 in all. 



Bill greyish-black, the upper part bluish. Iris brown. Feet black, but 

 with the greater part of the tarsus yellow. The neck and lower parts are 

 white, the former tinged with yellow; upper and fore part of head with the 

 space before the cheeks blackish-brown; the lower part of the hind neck and 

 all the upper parts blackish-grey, the primary quills and tail-feathers 

 brownish-black, the shafts of the former white. 



Length to end of tail 23 inches, to end of wings 15; extent of wings 45; 

 wing from flexure 12; tail 12; bill along the back li, along the edge of 

 lower mandible If; tarsus lj 7 ^; middle toe 1 T 4 2, its claw -yf. 



Adult Female. 



The female resembles the male, but the middle tail-feathers are about 

 three inches shorter. 



Genus II.— DIOMEDEA, Linn. ALBATROSS. 



Bill rather longer than the head, nearly straight, stout, much compressed; 

 upper mandible with its dorsal line much declinate, and nearly straight for 

 a third of its length, then concave, ascending to the unguis, on which it is 

 arched and decurved in the third of a circle, the ridge broad, convex, rounded 

 at the base, separated in its whole length by a groove, margined below 

 beyond the nostrils by a prominent line, from the sides, which are erect and 

 slightly convex, the edges sharp, the unguis decurved, much compressed, 

 with its sides flattened, and the tip acute; nostrils sub-basal, prominent, 

 tabular, having a horny sheath; lower mandible with the angle very narrow, 

 reaching to the tip, and having at its extremity a long slender interposed 

 horny process; the outline of the crura gently ascending, and quite straight, 

 until near the end, when it is a little decurved, the sides ascending, nearly 

 erect, a little convex, the edges sharp, the tip extremely compressed, its 



