531 



distinguishable by its larger size. I have only on two occasions seen it alive, skimming, like 

 Puffinus anglorum, the waves of the Atlantic, gliding down the slopes formed between the waves 

 and up the other side, tolerably close to the surface of the water, with extended wings, which 

 are rarely flapped, but kept almost motionless as it glides along. 



So far as I can ascertain, there is no authentic account of the breeding-habits of this Shear- 

 water ; and the eggs which do duty in the cabinets of collectors as belonging to it are almost 

 always those of Puffinus kuhli. 



The specimen figured, on the same Plate with Puffinus griseus, is the one from near 

 Plymouth above described. 



In the preparation of the above article I have examined the following specimens : — 



E Mus. H. E. Dresser, 

 a, $ . Plymouth Sound, December 11th, 1852 (/, Banker), b. Bay of Fundy (G. A. Boardman). 



E Mus. Brit. Beg. 



a. S. Africa, b. Cape of Good Hope (Smith). 



