Worker. Length 4 lines.-Obscure reddish-brown: the head, thorax, and node of the peduncle, with distant large shallow punctures, the interstices between the punctures very closely and very finely punctured; the legs and mandibles of a brighter red than the rest of the body; the mandibles finely striated longitudinally, their inner edge very finely serrated; the anterior margin of the clypeus rounded, the posterior margin of the vertex truncated. Thorax oblong, slightly narrowed posteriorly; the metathorax with a slight excavation, the shape of the anterior face of the node of the peduncle, which is curved in front and rounded behind, with an impressed central line above. Abdomen closely covered with very delicate shallow punctures; a deep strangulation between the first and second segments, the apical margins of the third and following segments pale rufo-testaceous.
Hab. Australia (Port Lincoln).
