BULWER'S PETREL. i?5 



interior of the island, the highest of which attain to an eleva- 

 tion of 2,700 feet. 



Nest. None. 



Eggs. Unknown. 



THE BLACK SHEARWATERS, GENUS BULWERIA. 



Bulweria, Bp. Cat. Met. Ucc. Eur. p. 81 (1842). 



Type, B. bulweri (Jard. & Selby). 



The genus Bulweria differs from the other genera of the 

 sub-family Puffi,?iince in its long and wedge-shaped tail ; the 

 nasal tubes are fleshy at the end, the openings separate, and 

 directed forwards and upwards. (Cf. Salvin, Cat. B. Brit. 

 Mus. xxv. p. 368). 



BULWERIA BULWERI. 



Procellaria bulweri, Jard. & Selby, 111. Orn. ii. pi. 65 (1830); 



Lilford, Col. Fig. Brit. B. part vii. (1888). 

 TJialassidroma bulweri^ Macgill. Brit. B. v. p. 449 (1852). 

 Bulweria columbina (Webb & Berth.), Dresser, B. Eur. viii. 



p. 55 1, pi. 614 (1878); B. O. U. List. Brit. B. p. 200 



(1883); Saunders, ed. Yarrell's Brit. B. iv. p. 34 (1884); 



id. Man. Brit. B. p. 723 (1889). 

 Bulweria bulweri^ Bp. ; Salvin, Cat. B. Brit. Mus. xxv. p. 420 



(1896). 



Adult Male. General colour above sooty-black, with a 

 greyish shade over the head and back, the scapulars, wing- 

 coverts and inner secondaries with obsolete brownish margins ; 

 greater coverts distinctly ashy-grey externally ; quills and tail- 

 feathers black ; under surface of body sooty-black, with an 

 ashy shade ; the chin, upper throat, and fore-part of cheeks clear 

 slaty-grey ; under wing-coverts sooty-black, like the breast, the 

 greater coverts and quill-lining more ashy ; bill black ; the 

 tarsi and base of toes greyish-pink, black for the terminal half 

 of both toes and webs; iris deep brown. Total length, 

 10*9 inches; oilmen, 0*85 ; wing, 8'o; tail, 4*35 ; tarsus, 1-05. 



Adult Female. Similar to the male. Total length, 107 

 inches; wing, 7-8. 



