19. Polyrhachis dives ^HNS.

P. niger, aureo-sericeo vestitus; thorace spinis acutis antice et postice armatis; squama quadrata spinis duabus longis curvatis.

Worker. Length 2 1/2 lines. Black: clothed with pale golden pubescence; the thorax with two short curved spines in front, and two of about the same length at its posterior margin; the scale of the abdomen compressed, square in front, and having two long spines which curve backwards; the pubescence on the head and thorax with an obscure. golden tinge; the legs without spines or pubescence; the calcaria pale testaceous.

Hab. Singapore.