15. Oecodoma pallida ^HNS. B.M.

Worker major, length 2 lines. Worker minor, 1 1/2 line. - This species very closely resembles hystrix ^HNS; its largest worker, however, is smaller than the smallest of that species, and its small worker the most diminutive of the genus. Mr. Bates says, " Very similar to the former ( hystrix ^HNS) in the number of the tho- racic spines, &c, but I think a distinct species. I found a pro- cession of them in a sandy tract of ground; all the individuals were of a uniform pale colour."

Hab. Brazil (Santarem).

This is probably the worker of Oe. rugosa ^HNS.