ST PAUL'S ROCKS, AND VOYAGES TO THE FALKLAND ISLANDS, ETC. 209 



The description of several petrels seen on the first voyage (December 24th to 26th) 

 corresponds with the above specimens, except that they are described as having 

 " a small white marking on the under and upper surface of the wing." This apparently 

 refers to another species, perhaps one of those species of CEstrelata with white on the 

 bases of the primaries. 



Another species of petrel was seen in similar small numbers from December 29th to 

 Jan nary 5th. This was about the same size, but the under parts were entirely white, 

 the wings almost black, " verging into grey on the rest of the body, with a white ring 

 round beak and tail." 



Several petrels of one or other of the two darker kinds were seen daily from 

 December 24th to January 3rd on this first voyage (26 to 45 S.), after which the 

 species with under parts wholly white was the only one observed. 



