176 VISCOUNT WALDEN ON THE BIRDS 
the rest of the under plumage, with the under tail-coverts and the rump and upper 
tail-coverts, has two or more broad, almost pure white, transverse bands on each 
feather. The black lores are faintly indicated by a darker shade of plumbeous. This 
is the phase described by Lesson (/.¢.), and represented in the eighth plate of the 
‘ Voyage de ]’Astrolabe.’ It is also the phase figured by D’Aubenton, only that in the 
‘ Planches Enluminées’ the lores are exhibited as black. Two other examples differ :— 
one in the black and white feathers extending higher up on the breast, and being 
more numerous on the rump; the other in their becoming less distinct—that is, 
passing into the fully adult phase. 
The Negros example (3 jide Meyer) has the whole of the under plumage, from the 
chin, barred transversely white and black; and the black and white feathers on the 
uropygium extend to the middle of the back. ‘This individual, I believe, represents 
the youngest of the three phases of plumage. It has not hitherto been described or 
figured. The dimensions of all six examples nearly agree. 
D’Aubenton’s plate, no. 629, first made this species known to science. The individual 
then figured was brought to Paris by Sonnerat (teste Montb. tom. cit. p. 82). With 
it Sonnerat also brought the individual represented by D’Aubenton on plate 630, and 
on which Gmelin founded his Corvus papuensis. Unfortunately Montbeillard did not 
state the localities where Sonnerat procured either of the two species. The one, how- 
ever, figured on the 630th plate is undoubtedly an exclusively Papuan form; and being 
so, we can with much certainty infer that it was obtained by Sonnerat from some part 
of the Papuan subregion during his only visit to the Papuan Islands, namely in the 
year 1772. The expedition which Sonnerat accompanied when he visited those islands, 
and which had left the Isle of France on the 29th of June, 1771, had previously, from 
the beginning of September 1771 to the beginning of February 1772, explored the 
Philippine Islands ; and Sonnerat seems to have never again travelled in the Philippine 
archipelago. He returned to France in 1772; and D’Aubenton’s plates were published 
prior to 1775’. After this date Sonnerat returned to the Kast and visited India, 
Malacca, and China. The subject of Pl. Enl.-629 was therefore procured during 
Sonnerat’s first voyage, either along with that of Pl. Enl. 630 (C. papuensis, Gm.) in 
the Papuan Islands, or else previously in one of the Philippines. No known Papuan 
Graucalus agrees with the bird figured in plate 629; but the female or young male of 
the common Philippine species does completely agree with it. I therefore without 
hesitation identify Le Choucas de la Nouvelle Guinée, D’Aubent., pl. 629, with the 
Philippine Cuckoo-shrike. Leaving out G. swainsonii, Gould, it being an Australian 
1 [ am unable to fix the exact publishing-date of Pl. Enl. 629 & 630; but as these plates are quoted by 
Montbeillard in the third volume of the first edition of the ‘Histoire Naturelle,” which is dated 1775, the 
examples brought to Paris by Sonnerat must have been obtained during his first yoyage (that is, his voyage to 
the Philippines and New Guinea), and not during his second voyage, when he visited Malacca at some period 
subsequent to 1776, the year when he left Europe for the second time, 
