19. Pseudomyrma ligniseca ^HNS.

Female. Length 3 lines.-Reddish-yellow: eyes very large, ovate and black; the teeth of the mandibles blackish; the head anteriorly, the antennae and legs, pale rufo-testaceous; the prothorax with the lateral margins acute and slightly raised; the first node of the petiole clavate and compressed, with a deep longitudinal groove above, the lateral margins forming elevated carinae which are prolonged at the apex, forming two blunt teeth; the second node globose; the first segment of the abdomen with a slight stain on each side at the base, and the two following segments also slightly stained, their apical margins pale.

Hab. Brazil (Ega).