Worker. Length 1 1/2 line.-Ferruginous, with the abdomen fuscous, or sometimes black; the thorax, legs and antennae paler than the head, slightly pubescent. Head enormously large, shining, deeply emarginate behind, with a central longitudinal channel, the face striated anteriorly; the mandibles very stout, their inner margin not toothed. Thorax rounded in front, narrowed behind, and deeply strangulated between the meso- and metathorax, the latter with two minute acute spines. Abdomen ovate.
Female. Length 3 1/4 lines.-Fusco-ferruginous and shining: the head ferruginous and longitudinally striated; the legs and antennal pale; wings subhyaline and iridescent, the nervures pale testaceous, the metathorax with two short acute spines.
Hab. Port Natal.
