532 



Nichols and Mxjrphy, Genus Phoebetria. 



FAuk 

 LOct. 



Subspecific distinctions: bill more slenderly built and more 

 strongly hooked than in other races of palpebrata; culmen more 

 decidedly concave or 'saddle-shaped,' the ridge at the base high 

 and acute. Head fuscous-black, darkest between eye and bill;' 

 back and underparts dark gray, rump still darker; wings and tail 

 brownish-black. 



The Bangs specimen is reasonably fresh, so that its plumage is 

 comparable with our own material. The bird is much darker than 

 any specimens of antarctica or huttoni, though nearer in coloration 

 to these than to fusca. Possibly auduboni has a more northerly 

 breeding area than the other members of palpebrata, in which case 

 its darker plumage would conform with a recognized color principle 

 among sea birds of the southern hemisphere. 



Measurements. 



Phoebetria fusca fusca (Hilsenberg). 



Diomedea fusca, Hilsenberg, Froriep's Notizen, Vol. IH, No. 5 (49), p. 74, 



1822. 

 Type Locality, Mozambique Channel. 

 Range, South Atlantic and western Indian Oceans, Tristan de Cunha and 



Gough Islands (breeding). Prince Edward Islands (?) and the Crozets 



(?). 



