MONOGRAPH OF THE PETRELS. 



the sides of the breast. In the two species above mentioned the head is bluish-grey, 

 like the back. 



The range of (E. leucoptera is given by Mr. A. J. Campbell (Nests and Eggs Austr. 

 Birds, II., p. 907) as the " seas of South Queensland, New South Wales, Victoria, 

 South and West Australia, and Tasmania." 



Adult. General colour above dark slaty-grey, the feathers of the back edged 

 with black, and with white bases ; head and hind-neck uniform blackish, with 

 obsolete margins of dark slaty-grey ; scapulars slaty-grey with black ends ; lower 

 back, rump, and upper tail-coverts light slaty-grey, with a patch of black in the 

 centre of the rump and median upper tail-coverts ; wing-coverts black, the greater 

 series slaty-grey with white margins ; bastard-wing, primary-coverts and quills, black, 

 with a slight shade of ashy-grey on the inner primaries, which have a good deal of 

 white on the inner web ; secondaries ashy-grey like the greater coverts, and similarly 

 fringed with hoary-white, the inner webs being also for the most part white ; tail- 

 feathers slaty-grey, blackish on the inner web, the two outer feathers having the inner 

 web whitish, freckled with dull ashy dots and vermiculations ; forehead white, 

 mottled with black centres ; lores and sides of face white, spotted with black before 

 and below the eye, as well as on the hinder cheeks ; the feathers immediately surround- 

 ing the eye black, overspreading the ear-coverts ; sides of neck black, as also the sides of 

 the upper breast, which have a slight shade of ashy ; under-surface of body white, 

 including the under tail-coverts, with a freckling of grey on the lower flanks ; under 

 wing-coverts white, the marginal coverts slaty-black ; axillaries white ; the lower 

 primary-coverts pure white ; quills ashy-brown below, with a good deal of white 

 along the inner web ; " bill black ; tarsus and basal half of the interdigital membrane 

 fleshy-Avhite ; remainder of the toes and interdigital membrane black " (J. Gould). 

 Total length about 12.0 inches; culmen, 1.05; wing, 8.65; tail, 3.7; tarsus, 1.15; 

 middle toe and claw, 1.5. 



The description and figure are taken from one of the type specimens presented 

 to us by Gould, and now in the British Museum. 



244 



