Female. Length 4 lines.-Black and shining, with the antennae, mandibles, legs, bead and thorax beneath, ferruginous; the vertex and the nodes of the peduncle obscure ferruginous; the head longitudinally striated. Thorax impunctate; the metathorax transversely striated, and armed with two short stout acute spines. Abdomen elongate, with the apical margins of the segments more or less rufo-piceous; the second node of the peduncle produced on each side into a short acute spine.
Hab. Australia (Adelaide).
