Order PR0GELLARIIF0BME8 
No. 103. 
Family PROCELLARIIDjE. 
PTERODROMA COOKII LEUCOPTERA. 
WHITE-WINGED PETREL. 
' (Plate 88.)* 
Procellaeia LEUCOPTERA Gould, Ann. Mag. Nat. Hist., Vol. XHI., p. 364, 1844 ; Port 
Stephens, New South Wales. 
Procellaria leucoytera Gould, Ann. Mag. Nat. Hist., Vol. XIII., p. 364, 1844. 
Procellaria cookii (not Gray) Gould, Birds Austr., Vol. VII., pi. 51, 1846. 
Rhantistes velox Bonaparte, Comptes Rendus Sci., Paris, Vol. XLII., p. 768, 1856. 
Coohilaria velox id., ib., Vol. XLIII., p. 995, 1856. 
Cookilaria leucoptera id., Oonsp. Gen. Av., Vol. II., p. 190, 1857. 
Mstrelata leucoptera Gould, Handb. Birds Austr., Vol. II., p. 454, 1865 ; Reichenow, Deutsche 
Siidp. Exp., Zool., p. 486, 1907. 
Fulmarus leucopterus Gray, Handl. Gen. Sp. Birds Brit. Mus., Vol. III., p. 106, 1871. 
Fulmarus velox id., ib. 
(Estrelata leucoptera Salvin, in Rowley’s Misc., Vol. I., p. 256, 1876 ; id., Cat. Birds Brit. 
Mus., Vol. XXV., p. 416, 1896 ; Campbell, Nests and Eggs Austr. Birds, p. 907, 1901 ; 
Hall, Key Birds Austr., p. 94, 1906 ; Mathews, Handl. Birds Austral., p. 17, 1908 ; 
Godman, Monogr. Petrels, p. 243, 1908 ; Littler, Handb. Birds Tasm., p. 176, 1910 ; 
HuU, Emu, Vol. X., pp. 252-3, 1911 ; id., Vol. XI., p. 99, 1911. 
Pterodroma {.Estrelata) leucoptera Ramsay, Proc. Linn. Soc. N.S.W., Vol. II., p. 202, 1877 ; 
id.. Tab. List Austr. Birds, p. 24, 1888. 
Distribution. The seas of New South Wales. 
Adult male. Head, hind-neck, sides of neck and mantle black, hke the lesser wing-coverts, 
bastard- wing, primary-coverts, outer webs and tips of primaries and the long scapu- 
lars ; inner webs of primaries brown near the shafts, white on the remaining portion 
of the inner webs ; median and greater wing-coverts ash-grey as also the back and 
short scapulars ; innermost primaries and secondaries ashy-grey, basal portion of 
inner webs white ; axillaries white ; upper tail-coverts and tail pale ash-grey, 
some of the outer feathers minutely mottled with white and grey on the inner wfebs ; 
feathers of the forehead black, fringed with white ; lores, chin, throat, and entire 
under-surface white, including the long under tail-coverts, sides of body and under 
wing-coverts ; the small coverts round the margin of the wing slate-grey narrowly 
edged with white ; sides of breast dark slate grey. Total length 307 mm. ; 
culmen 25, wing 215, tail 95, tarsus 30. 
* The Plate is lettered (Estrelata leucoptera. 
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