Worker. Length 3 lines.-Black: the mandibles, antennae and legs ferruginous. Head subquadrate, striated, the striae running obliquely from the centre on each side, beneath, the striation runs in a transverse curve; eyes rather prominent. Thorax striated, the striae running gradually obliquely inwards in front, and crossing in a transverse curve over the metathorax- The node of the peduncle incrassate, its anterior margin rounded, and the first two segments of the abdomen striated, the striation very regular and beautiful, describing two-thirds of a circle; the two basal segments longitudinally striated.
Hab. Brazil. (Coll. F. Smith.)
