of the Genus Collocalia. 121 
Batchian, and probably on the other Molucca Islands. 
The spot on the first and fourth feathers is not so prominent 
as that on the second and third. Sometimes it is hardly visible 
on the first feather. 
e. Timor Group. 
Collocalia nidifica, var. 
Upper surface like that of C. nidifica, but the lower surface 
appears to be of a greyish colour. 
Length 4” 9”, wings 4” 3”, tail 2” 3’. 
Timor (Coupang). 
Collocalia neglecta*. 
Hirundo esculenta, var., Less. 
Collocalia esculenta, Bp. 
5 pes: Wall. 
neglecta, G. R. Gr. 
Upper surface zneous plumbeous, with the shafts of the 
feathers darker; feathers of the rump narrowly margined with 
white; upper tail-coverts metallic black; throat and cheeks 
fuliginous; breast and abdomen white, especially the latter; 
tail metallic black, with a lengthened white space at the base 
of the inner web of each lateral feather; under tail-coverts 
metallic black, with the smaller ones white, having the shafts 
black. 
Length 4”, wings 3” 10”, tail 1” 8”. 
East Timor. 
* Mr. Wallace having, since the above characters of the three small 
species C. hypoleuca, C. spilura, and C. neglecta were drawn up, kindly 
lent me his specimens of this interesting group, I have been enabled to 
verify the correctness of the views I had formed on the four specimens 
from three localities that I had the opportunity of examining, viz. that the 
white extends in a lengthened form on the inner web of the lateral tail- 
feathers, in the Aru, Mysol, and Timor (and it is also the case in that of 
Celebes) examples, while the white forms only a small spot on the inner 
web of the lateral feathers, somewhat removed from the base, in those 
of Batchian and Matabello, and probably also of the other Molucca 
Islands. 
The specimens of Mr. Wallace also exhibit the same characters, proving 
I was right in considering that there existed at least two, if not three, spe- 
cies, and I am therefore still induced to refrain from following him in 
placing all the examples from various localities (Celebes, Timor, Moluccas, 
and Aru Islands) under what I consider to be the erroneous name of 
esculenta. 
Mr. Wallace’s example of the Timor bird is like in all points to the two 
specimens previously examined. In its upper surface it is totally different 
from those of the other localities, and it is also of a more pure white on 
the under surface. 
