119 



[Vol. XXXV. 



" An examination of these specimens reveals the fact that 

 they differ markedly from specimens obtained in the North 

 Atlantic islands in having 



" (1) The bill very much more slender and differently 

 shaped in several ways, which is best seen by 

 glancing at the diagram (text-fig.). 



Fig. 1. 



^??- 



Fio-. 



Fig. 1. — Viiffimis huhli flavirostris (Gould). Nat. size. 

 Fig. 2. — Pti_ffinus kuhli fortunatus Baunerman. Nat. size. 



'^ As is well known, the bill in male examples of the North 

 Atlantic Shearwater is distinctly larger and. generally more 

 robust than in the female. 



" In the specimens from Kerguelen the sex has not been 

 ascertained, but the bill is much more slender and less robust 

 than in female examples from the North Atlantic. 



" I believe the birds from Kerguelen to be females, but 

 should this supposition prove to be incorrect, then the 

 difference in the size of the bill between the two forms will 

 be even more striking still. 



