Eciton pachycerus

Smith, F., 1858, Catalogue of the hymenopterous insects in the collection of the British Museum. Part VI. Formicidae., London: British Museum : 153

9. Eciton pachycerus . B.M.

Worker. Length 2 lines.-Chestnut-red: smooth and shining. Antennae short and very stout, shorter than the thorax. Thorax anteriorly shining, the metathorax opake 5 the nodes of the peduncle incrassate, subglobose; the femora very slender at the base, and incrassate towards their apex; entirely destitute of pubescence.

Hab. South America? (Coll. Gen. Hardwick.)

This species is the only one of the genus which is apparently quite destitute of eyes; in E. legionis and E. pilosa they are extremely minute, but we have failed, even with the aid of a powerful microscope, in our endeavours to discover them in this species.