6. Polyrhachis ruficornis ^HNS.

P. niger; antennis mandibulis pedibusque ferrugineis, abdominis squamula spinis duabus longis armata.

Female. Length 4 lines. Black: the antennae and mandibles ferruginous. Thorax elongate-ovate; wings subhyaline and iridescent, the nervures testaceous; the legs ferruginous, the coxae black. Abdomen: the base more or less ferruginous; the scale with two stout divergent spines above, which curve slightly backwards.

Hab. Borneo (Sarawak).