2. Carebara castanea ^HNS. B.M.

Female. Length 8 1/2 lines. - Dark chestnut-brown, smooth, shining, and sparingly and delicately punctured. Head small and more strongly punctured than the thorax; a deeply impressed line in front of the anterior ocellus, extending to the base of the clypeus, which is smooth, shining and convex, with its anterior margin rounded; the mandibles punctate-striate, with four or five black acute teeth; the antennae and apical joints of the tarsi pale rufo-testaceous; the mesothorax with two central approxi- mating lines anteriorly, which terminate a little before the middle.of the disk, also a faintly impressed line opposite each tegula; wings smoky, nervures dark ferruginous. Abdomen large and ovate, the nodes of the petiole transverse, the anterior lateral angles of the second node acute.

Hab . Hong Kong.

This species very closely resembles C. lignata ^HNS, but may be distinguished by its having the second node of the petiole widest anteriorly: the reverse is the characteristic of the typical insect.