50 VISCOUNT WALDEN ON THE BIRDS OF CELEBES. 
The absence of the two genera Criniger and Rhipidura in Celebes constitutes one of 
the many peculiarities of its ornis. Criniger, represented in the neighbouring Sula 
Islands by a peculiar species, possesses other representatives in many of the Moluccan 
islands and throughout the Indo-Malayan subregion. 
Rhipidura is still more widely and largely represented in the whole Australian region, 
and in the Indo-Malayan subregion, having representatives in all the islands of the 
Malay archipelago, excepting Celebes and the Sula Islands. 
Then, again, the presence of the two genera Coracias and Myialestes is equally 
remarkable; for they are both unknown in any part of the Indo-Malayan region, and 
only reappear on the mainland of Asia. 
After rejecting all those species whose Celebean origin does not rest upon the most 
undoubted authority, I find that the number of birds inhabiting Celebes amounts to, at 
least, one hundred and ninety-three. Of this number sixty-five are peculiar to the 
island. Twenty more are found also in the Sula Islands, or the Sanghir group, making 
a total of eighty-five species peculiar to Celebes and the two groups just mentioned. 
Of the remaining one hundred and eight species, fifty-five have Indian affinities (that 
is, are elsewhere only found in the Indian region as opposed to the Australian), though 
many extend beyond the limits of the Indian region; fourteen are found in the Aus- 
tralian and not in the Indian region, and twenty-eight are common to both regions; 
eight more species seem to be confined to the Moluccan islands; and three, not included 
above, are doubtfully found beyond Celebes: these are Elanus hypoleucos, Ephialtes 
menadensis, and the Celebean form of Jotreron melanocephala. 
PSITTACI. 
PLYCTOLOPHID. 
Cacatua, Vieillot. 
1. CacaTUA sULPHUREA (Gm.), S. N, ed. xiii. i. p. 330, “ Moluccas” (1788), ex Brisson, 
Orn. iy. p. 206, no. 9; O. Finsch, Papag. i. p. 296. 
Cacatua equatorialis, Temm., Wallace, P. Z. 8. 1864, p. 280. 
Hab. Tomini (Forsten); Flores, Lombock (Wadllace). 
Dr. O. Finsch regards the individuals inhabiting the islands of Flores and Lombock 
as belonging to this Celebean species. This is also Mr. Wallace’s view (/.¢.). Both 
authors concur in specifically separating the Timorese bird. On the other hand, 
Professor Schlegel continues to include the Timorese form (C. su/phurea, apud Wallace 
l. c., =P. buffoni, O. Finsch, op. cit. p. 300). The eminent Professor also mentions 
that in the Celebean Cockatoo the iris is red, while in those of Flores, Timor, and 
Lombock it is of a darker red, often passing into brown (conf. Nederl. Tijdschr. 1866, 
