568 CLASS AVES. 



p. Furcata, Lin. 



Bluish-ash ; throat, white ; wings, ashy-black ; tail, 

 forked, as long as the wings ; bill short, well deflexed, 

 rather long, black ; feet, bluish. 



American Petrel. Proc. Fregatta, Lath., Rochef. 

 Antill. p. 152. 



Black-dorsal feathers, white-edged ; chest, abdomen, 

 and upper tail-coverts, white ; tail, equal ; claws, la- 

 mellated ; bill and feet, black ; tarsus, longer than the 

 middle toe. Kuhl, Beitr. t. 10, f. 3, head. 



Proc. Marina^ Vieill, 

 Gal. 292. 



Black ; eyebrows and side of neck, white ; tail naked, 

 as long as the wings ; bill and feet, black ; web, 

 yellow, black-edged ; legs very long. South Seas. 

 Kuhl Beitr. t. 10, f. 2, head. 



We separate, with Brisson, under the name of 

 Puffins,* Puffinus. 



Those in which the end of the lower mandible is 

 bent towards the base with that of the upper, and 

 in which the nostrils, although tubular, open not by 

 a common orifice, but by two distinct holes. Their 

 bill is more elongated in proportion. 



Shear-water Petrel. Proc. Puffinus^ Gm. Enl. 962, 



Is ash-coloured above, and whitish underneath, with 

 the wings and tail black. The young is deeper in 



* The name of the second species on the coasts of Scotland. 



