BULWER's PETRELi 175 



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. 8i (1842). 



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



The genus Bulweria differs from the other genera of the 

 sub-family PuffinincB 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). 



I. bulwer's petrel, bulweria bulweri. 



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



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

 Thalassidroma buhveri^ Macgill. Brit. B. v. p. 449 (1852). 

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



p. 551, 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, wdng- 

 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, 

 io'9 inches; culmen, 0*85 ; wing, 8'o; tail, 4*35 ; tarsus, 1*05. 



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

 inches; wing, 7-8. 



