6. Crematogaster inflatus ^HNS. Pl. IX. fig. I. B.M.

Worker. Length 2 1/2 lines.-Black, smooth and shining: the antennae dark rufo-piceous; the mandibles ferruginous, striated, with their teeth black; the eyes small and lateral, placed about the middle at the sides of the head. Thorax: the anterior margin rounded, the posterior portion forming a semi-transparent bladder-like swelling, with a deep longitudinal depression in the middle; the inflated part not quite so wide as the head; the apical joints of the tarsi rufo-testaceous. Abdomen heartshaped; the peduncle, base and apical margin of the first segment obscurely rufo-piceous.

Hab . Singapore; Borneo (Sarawak).