PUFFINUS GRAVIS. 



the quill-lining distinctly hoary-grey on the inner web ; a conspicuous patch of sooty- 

 brown feathers over the thigh ; under tail-coverts sooty-brown, the longer ones tipped 

 with white, and some of them having a longitudinal white centre ; " bill yellowish-green ; 

 edges of eyelids dark grey ; iris brown ; feet light greenish-grey, webs and claws 

 yellowish flesh-colour" (Audubon). Total length about 17 inches; culmen, 1.8; 

 wing, 12.8 ; tail, 4.5 ; tarsus, 2.1 ; middle toe and claw, 2.55. 



The description has been taken from a specimen shot off Plymouth, in the 

 Howard Saunders Collection, now in the British Museum. It was given by Gould to 

 Frederic Bond, by whom it was presented to Howard Saunders. 



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