332 PACIFIC FULMAR. 



united nasal tubes is concave in the Atlantic Fulmar, and its ridge 

 flattened ; whereas the outline of these tubes is straight in the Pacific 

 species, and its ridge distinctly carinate. 



Adult. 



Bill shorter than the head, robust, straight, compressed, the tip 

 curved. Upper mandible with the nostrils on the ridge, separated by 

 a thin septum, covered by an elevated horny case, and opening directly 

 forwards, the sides erect, convex, and separated by a groove from the 

 nasal plate, as well as from the unguis, which is strong, decurved, and 

 acute, the edges sharp, inflected, and slightly recurved from the base 

 to the unguis. Lower mandible with the angle long, narrow, acute, the 

 sides erect, with a groove in their whole length, the edges sharp and 

 direct, the very short dorsal line ascending and slightly concave, the 

 edges decurved at the end. 



Head rather large, ovate ; neck rather short. Feet of moderate 

 length, stout ; tibia bare for a short space below ; tarsus a little com- 

 pressed, covered all round with reticular scales, of which those on the 

 anterior and posterior thin ridges are much smaller. Hind toe a slight 

 prominence, with a conical rather obtuse claw ; the fore toes long, slen- 

 der, scutellate above, connected by striated entire webs, the fourth a lit- 

 tle longer than the third, the second or inner not much shorter. Claws 

 rather small, slightly arched, compressed, acute, that of the third toe 

 with an inner thin edge. Plumage full, close, elastic, blended ; on the 

 back and wings the feathers rather distinct. Wings long ; primary 

 quills rather broad, tapering to a roundish point having a minute acu- 

 men, the first four-twelfths longer than the second, which exceeds the 

 third by half an inch ; secondary quills broad and rounded. Tail short, 

 rounded, of fourteen rounded feathers, of which the lateral are one 

 inch shorter than the middle ; the lower tail-coverts very strong and of 

 the same length as the tail-feathers. 



Bill and feet yellow. The head, neck, and lower parts are pure 

 white ; the back and wings light greyish-blue, but most of the feathers, 

 including those of the tail, becoming dark grey toward the end ; the pri- 

 mary quills and their coverts are blackish-brown, tinged with grey. 



Length to end of tail 18 inches ; bill along the ridge 1/^ ; nasal 

 case II ; wing from flexure 12i''2 ; tail 4| ; tarsus 1\^; hind toe j%, its 

 claw I's ; second toe lii, its claw t% ; thu'd toe 2y^j, its claw j''^ ; fourth 

 toe 2^, its claw ^*j. 



