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 Descj'iptions of new Species. By George IIobert Gray, F.E.S., F.L.S. &c. 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. Malay Group. India. Collocalia nidifica. Hirundo esculent a (Osbeck?), Ilorsf. fuciphaga, Tlmub. esculenta, var., Lath. Collocalia nidifica, G. R. Gr. fuciphaga, 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, Krempfer in 1712, Osbeck in 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. imicolor, Jerd. Cypselus unicolor, Jerd. concolor, Bl. Cotyle brevirostris, Boie. concolor, Boie. Collocalia brevirostris, Strickl. nidifica, p., Bl. fucip)haga, p., Bp. Neilghcrrics, Himalaya, Sikkim, Assam, Ceylon, and western coast of the Indian peninsula, &c.
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