Order PROCELLARII FORM ES. 
Family PELEC'ANOIDIDJE. 
No. 118 . 
PELECANOIDES URINATBIX BELCHERI. 
SMALL DIVING PETREL. 
Coloured figure Pelecanoides ttrinatrix Mathews, Birds Austr., Vol. II., pt. u, pi. 94,1910. 
Pelecanoides wrinatrix belcheri Mathews, Austral Av. Rec., Vol. I., p. 84, Sept. 18th, 1912. Victoria. 
Halodroma. berardi (not Q. and G.) Hutton, Ibis, 1872, p. 248, July. Chatham Island. Hutton, 
Trans. New Zeal Inst., 1872, Vol. V., p. 224, May, 1873. Finsch id., 1874, Vol. VII., p.234, 
July, 1875. 
Pelecanoides berardi Buller, New Zeal. Brds, p. 314, April, 1873. id. ib., 2nd edn., Vol. II., 
p. 208, 1888. 
Pelecanoides exsnl Buller Birds New Zeal. Supph, Vol. I., p. 127, 1905 ; Stuart-Sutherland, Emu, 
Vol. XXII., pt.i., p. 57, July 1st, 1922. 
Pelecanoides wrinatrix urinairix Mathews, Birds Austr., Vol. II., pt. ii, p. 234, pi. 94, July 31st, 1912. 
Pelecanoides urinairix Mathews and Iredale, Austral Av. Rec., Vol. IV., Nos. 2 and 3, p. 52, July 28th, 
1920 ; Oliver, New Zeal. Birds, p. 93, Aug., 1930. 
Pelecanoides urinairix chatJiamensis Murphy and Harper, Bull. Arner. Mus. Nat. Hist., Vol. XXXV., 
p. 65, April 1st, 1916. Chatham Island. Oliver, New Zeal. Birds, p. 94, Aug., 1930. 
In the quotation given I worked up this species, and its many subspecies, 
admitted to date. 
There can be no doubt but that all references to the occurrence of exsul 
in the Chatham Islands refer to this form. These two subspecies are very 
similar. 
In his first edition, p. 314, Buller says the specimen described was obtained 
by Mr. Henry Travers on Pitt’s Island, Chatham Island, in January, 1872. 
Godman, in his Monograph, p. 306, described Chatham Island young 
Nestling. Covered with pale silvery-grey down, the under-surface pure 
white. 
This stage of downy plumage is followed hy a second, in which the down 
continues till the bird is of the size of the adult. This second downy stage is 
much darker than the first, and is of a dark sooty-grey colour, lighter and more 
ashy below'. On the feathers of the head and back can be seen traces of the 
silvery down of the former stage, the sooty-grey feathers having a silvery-grey 
tip attached to the end of the shaft, the dark plumes having pushed the silvery- 
grey ones out of their original position and taken their place. 
It is interesting to note that in another downy young bird the wings are 
nearly full grown and the secondaries are edged with white, which may be taken 
as a sign of an immature bird. 
102 
