450 FULMAR PETREL. 



curved and acute, the edges sharp, inflected, and slightly curved. Lower 

 mandible with the angle long, rather wide, acute, the sides erect but con- 

 vex, the edges sharp and inflected, the very short dorsal line ascending 

 and slightly concave, the edges decurved at the end. 



Head rather large, ovate. Neck rather short. Body full. Feet of 

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

 compressed, rather sharp before, covered all round with reticular scales, 

 of which those on the anterior and posterior ridges are much smaller. 

 Hind toe a slight prominence, with a conical obtuse claw ; the fore toes 

 long, slender, scutellate above, connected by striated entire webs, the 

 fourth a little longer than the third, the second not much shorter. Claws 

 rather small, arched, compressed, rather acute, that of third toe with an 

 inner thin edge. 



Plimiage free, close, elastic, blended ; on the back and wings the fea- 

 thers rather distinct. Wings long ; primary quills rather broad, taper- 

 ing, acimiinate, the first longest, the rest graduated ; secondary broad and 

 rounded. Tail rather short, slightly rounded, of twelve broad, rounded 

 feathers. 



Bill, iris, and feet yellow, the latter tinged with green. The head, 

 neck and lower parts, are pure white ; the back and wings light greyish- 

 blue, the rump paler, the tail bluish-white ; the primary quills and their 

 coverts blackish-brown. 



Length to end of tail I6i inches, to end of wings 17|, to end of claws 

 11 J ; extent of wings 30 ; wing from flexure 13; tail 4^ ; bill along the 

 back lig, along the edge of lower mandible 2/^ ; tarsus 2 ; outer toe Ij^^, 

 its claw II . Weight 1 lb. 4 oz. 



The Female is similar to the Male. 



