118 Mr. G. R. Gray on the Species 
Leuckart, Alder, Diesing, and Keferstein); but I have distributed 
its species in the sections of the great genus Sipunculus. I 
admit, however, that the latter must be sooner or later broken 
up ; but, in the present state of science, I do not yet know exactly 
what organs would furnish readily appreciable characters for 
this division. This is the smallest portion of the task which I 
leave for my successors. 
XIV.—A Synopsis of the Species of the Genus Collocalia, with 
Descriptions of new Species. By Grorce Roserr Gray, 
F.R.S., F.LS. &e. 
THE object of this synopsis is to exhibit the number of the 
species at present known, and at the same time to show their 
relative position in a geographical point of view. 
a. Matay Grour. India. 
Collocalia nidifica. 
Hirundo esculenta (Osbeck ?), Horsf. 
fuciphaga, Thunb. 
esculenta, var., Lath. 
Collocalia nidifica, G. R. Gyr. 
Suciphaga, Bp. 
Top of head, wings, and tail greenish metallic fuscous black ; 
back deep bronzy brown, slightly lighter on rump; beneath the 
body and sides of the neck brownish mouse-colour, tinted with 
rusty ; tail rather forked, and immaculate. 
Length 4” 10", wings 4” 9", tail 2" 3!". 
Java, Sumatra, and other islands of the Eastern Archipelago. 
It is probably the nest of this species that was noticed by 
Bontius in 1568, Kempfer in 1712, Osbeck im 1750, and 
Hoogman in 1780, as it is much employed for culinary purposes. 
Var. a. With the rump of a lighter colour; beneath the body 
greyish mouse-colour. 
Length 5", wings 4" 6! to 4! 9", tail 2" 3", 
Hirundo brevirostris, M‘Clell. 
unicolor, Jerd. 
Cypselus unicolor, Jerd. 
concolor, Bl. 
Cotyle brevirostris, Boie. 
concolor, Boie. 
Collocalia brevirostris, Strickl. 
nidifica, p., Bl. 
fuciphaga, p., Bp. 
Neilgherries, Himalaya, Sikkim, Assam, Ceylon, and western 
coast of the Indian peninsula, &c. 
