512 CETOSPARACTES EBUllNEUS. 



ivory-M-liite, with browiiisli-hluck circular spots dispersed 

 through it, sparingly distributed on the back and lower parts, 

 most numerous on the wing-coverts and scapulars ; the tail 

 and primaries tipped Avith the same colour ; the throat simi- 

 larly mottled, but the dusky spots of a paler shade and con- 

 fluent ; the forehead aud loral spaces lead-colour. 



Remarks. — This species has the tarsi much shorter, less 

 compressed, and more scabrous, than those of any other of its 

 family. The bill is stronger and less compressed than that 

 of the smaller British Gulls. In these respects, as well as in 

 its general form and habits, it approaches in some degree to 

 the Fulmar-Petrels. This affinity is further indicated by the 

 colouring of the young. The Kittiwake, although its bill is 

 more slender, is, I think, more nearly allied to the Ivory Gull 

 than to any other British species. 



