430 FULMARUS GLACIALIS. 



ance, having the body moderately full ; the neck of ordinary 

 length ; the head rather large and ovate. Bill shorter than 

 the head, strong, nearly straight, slightly compressed. Upper 

 mandible Avitli its outline concave above, the dorsal plate 

 broad, opening directly forwards ; the nostrils separated by 

 a thin septum ; the sides convex, and separated by a groove 

 from the nasal plate and the vinguis, "syhich is very strong, 

 decurved, and acute. Lower mandible with the angle long, 

 rather wide, but acute; the sides erect and convex; the 

 edges sharp and inflexed, as are those of the upper, decurved 

 at the end ; the dorsal line very short, ascending, slightly 

 concave. 



Eyes rather small. Apertures of ears moderate. Legs 

 stout ; tibia bare for a short space ; tarsus slightly com- 

 pressed, covered all round Avith reticularly arranged scales, 

 those on the anterior and posterior ridges much smaller. 

 Hind toe very diminutive, with a conical, obtuse claw ; an- 

 terior toes long, slender, scutellate, connected by entire 

 striated membranes, the fourth a little longer than the third, 

 the second or inner not much shorter. Claws arched, com- 

 pressed, rather acute. 



Plumage full, close, elastic, blended ; on the back and 

 wings rather compact. Wings long, pointed ; primaries 

 tapering, acuminate, the first longest ; secondaries broad and 

 rounded. Tail rather short, slightly rounded, of fourteen 

 broad feathers. 



Length to end of tail 20 inches ; wing from flexure 13 ; 

 tail 4jV; bill along the ridge 1\^, along the edge of lower 

 mandible SyV ; tarsus 2 jV ; outer toe and claw 3jV ; middle 

 toe ai:id claw 3. 



Female. — The female is similar to the male, and about 

 the same size. 



The above description is taken from specimens brought 

 by the surgeons of whalers from Davis' Straits. The follow- 

 ing is from recent St. Kilda specimens, by Mr. John Mac- 

 Gillivray : — " Upper parts bluish-grey, darker on the wings, 

 and gradually fading aAvay to the tail ; head and neck white, 

 with a slight tinge of yellow on the throat, and a small 



