5. Myrmecia vindex ^HNS. B.M.

Worker. Length 7 lines.-Ferruginous, with the abdomen black; the nodes of the petiole ferruginous; the sculpture nearly the same as in M. sanguinea ^HNS; the mandibles are, however, longer, more strongly toothed, and of a pale yellow colour; the nodes of the petiole are more elongate, and the petiole of the first node is longer and more slender; the insect is of a duller red than M. sanguinea ^HNS; the head sometimes fuscous-red.

Hab . West Australia.