7. Polyrhachis vestitus ^HNS.

P. niger, aureo-sericeo vestitus; thorace spinis duabus acutis antice armato; squama integra.

Worker. Length 6 lines. Black, and clothed with a pale golden sericeous pile; the legs naked; the mandibles stout, finely striated, the striæ interspersed with punctures; the front of the head very prominent. Thorax flattened above, the margins acute and slightly raised; the pro-, meso- and metathorax separated by strongly marked sutures; the prothorax armed at its anterior angles with a stout acute spine, which is compressed and broad at its base. Abdomen: the peduncle unarmed, its margin rounded.

Hab. Makassar.

This species is nearly three times the size of P. inermis ^HNS, which it resembles in form, but is covered with silvery pile.