MATHEWS— Birds of North and North-West Australia. 203 



but gravel. The extent of white at the tip of the lower man- 

 dible varies much; in some it forms a narrow line round the 

 apical third, in others it extends almost quite across, in others 

 this part has a fleshy tint. 



No. 523— $ . Length, 16.4 inches (7/11/86). 



No. 525— $ . Length, 16.5 inches (7/11/86). 



No, 534— $ . Length, 16.2 inches (9/11/86). 



93. Nyroca australis. White-eyed Duck. 



Nyroca australis Eyton. Monogr. Anat. p. 160, 1838, New 

 South Wales. • 



No. 292— 5 . Length, 19 inches (20/7/86). 



Irides, with three rings, the inner and outer of light 

 brown, the middle one white; bill, upper mandible, black for 

 for tbout two-thirds of its length, where it is crossed by an 

 irregular bluish-slate coloured band, tip, freckled brown and 

 slate; nail, brown; lower mandible, slate, irregularly spotted 

 with brown; tarsi and toes,, light slate, splashed here and 

 there with a darker tint ; webs of a darker slate than the toes, 

 but a line on each side of the toes on the web of the same 

 colour as the tarsi. 



No. 385— 9 . Length, 18.5 inches (16/7/86). 



Irides, white; upper mandible with the basal portion, 

 black; anterior portion, pale bluish-white, and a iaargin of the 

 same colour round the lower edge of the nostrils; nail, black; 

 lower mandible and nail, very dark brown, crossed by a band 

 of bluish-white; tarsi, slatey brown, with a large patch in 

 front, dirty white; toes, dirty white shaded with brown at 

 their points; webs, black, but with a stripe adjoining and run- 

 ning along the middle and outer toes, dirty white; inner web 

 of the inner toe, dirty white, edged with black; tarsal, toe, 

 dirty white; its web, black; nails, dark brown, lighter at the 

 base. 



95. Mbsocarbo atbr atbr. Little Black Cormorant. 



Carlo (iter Lesson Traite d'Orn. Ip. 604, 1831, Shark's Bay, 

 West Australia. 



No. 248— $ . Length, 26.1 inches (31/8/86). 



Irides, fine green; bill, white horn, becoming brown on 

 and all along the culmen, and showing bluish lines on the sides 

 of the lower mandible, skin at the base of the bill and gular 

 pouch, lead colour; feet and webs, black. 



