12. Polyrhachis bellicosus ^HNS.

P. capite abdomineque nigris, thorace femoribusque rufis, thorace quadrispinoso, petioli squamula bihamata.

Worker. Length 3 1 / 2 lines. Black, with the scale of the petiole, thorax, coxae, and femora blood-red. Thorax: the lateral margins raised above, with two slightly curved divergent spines in front, and two stout, acute, long curved spines in the middle, directed backwards; the scale of the petiole forming a long erect pedestal, which terminates above in two much bent acute hooks, directed backwards, and being as high as the basal segment of the abdomen; the spines and hooks black at the apex. Abdomen ovate.

Hab. Aru.