Genus 7. PACHYCONDYLA ^HNS.

Head oblong, subquadrate, the anterior margin of the clypeus rounded; mandibles large, stout and produced, their inner margin denticulate; antennae clavate; eyes placed forward on the sides of the head, ovate, and of a medium size; the labial palpi 4-jointed, the maxillary palpi 4-jointed. Thorax oblong, and slightly narrowed posteriorly; the calcaria pectinate. Abdomen elongate; the node of the peduncle incrassate, quadrate or subquadrate, elevated to the same level as the first segment, and usually of nearly the same width.