5. Eciton crassicornis ^HNS. Pl. VI. figs. 1, 2, 3, 4. B.M.

Eciton crassicornis ^HNS. Smith, Trans. Ent. Soc. Lond. iii. new ser.

Hab. Brazil (Villa Nova).

This is a species very easily recognized by its short thick antennae; the large workers are not furnished with elongated mandibles.