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Genus Diomedia (1), Linn. 
* Diom. exulans. Cape of Good Hope , $c. 
Genus Procellaria. 
* Procell. capensis. Cape of Good Hope. 
Genus Haladroma, III; 
Hal. urinatrix. Pacific. 
Genus Thalassidroma. 
* Thai. Leachii. Britain. Or Thai, pelagica. Britain. 
Genus Pachyptila. III. 
Pachyp. Forsteri. Pacific. 
(1) Under this generic head Mr. Swainson considers the following 
as subgenera, viz. : — Procellaria , Diomedia, Haladroma, Thalassidroma, 
and Pachyptila but as they are more likely to constitute genera under 
a higher rank or subfamily , they are here considered as generic types. 
II 
