Genus — P HCEBETRIA. 
Phcebetria Reichenbach, Nat. Syst. Vog., p. v., 1852 . . Type P. palpebrata. 
Phcehastria (error) Gunning and Haagner, Ann. Trans. Mus., 
Vol. II., Suppl., p. 76, 1910. 
This well-marked genus differs from Thalassarche in its more compressed bill, 
the culmen approaches the frontal feathers at a sharp angle ; and in the 
presence of a deep groove along the sides of the lower mandible filled with 
a loose, coloured skin. The tail is long, and wedge-shaped. The nostrils are 
also placed further back, and approach in position more closely those in 
Diomedea than in Thalassarche. 
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