Acanthoponera ^HNS sens. str.)............................2

Claws simple: epinotum at most dentate or subdentate; petiole (except in A. leae ^HNS) unarmed or merely with a median tooth or projection behind; constriction between postpetiole and gaster well-developed, (subgen. Anacanthoponera ^HNS subgen. nov.).........................6.

2. Frontal carinae and adjacent scrobes extending around the

posterior corners of the head and terminating under the eyes; funicular joints 2-5 at least twice as broad as

long; epinotal spines curved downward...............3.

Frontal carinae and scrobes terminating at posterior corners of head; scapes more slender, funicular joints 2-5 somewhat broader than long............................4.

3. Petiolar spine shorter than the epinotal spines; constriction

between postpetiole and first gastric segment distinct; these segments aciculate, subopaque. Length 4.9-5 mm.

(Brazil)................................ goeldii Forel ^HNS.

Petiolar spine as long as the epinotal spines; constriction between postpetiole and first gastric segment absent; these segments shining, finely punctate. Length 4.5 mm. (Guatemala)................ subsp. schwarzi subsp. nov. ^HNS

4. Epinotal spines curved inwards. Length 8 mm.; female

10 mm. Postpetiole and first gastric segment punctate-

rugulose, subopaque. (Brazil)..... mucronata ^HNS • (Roger.)

Length 6 mm. or less................................5. 5. Anterior corners of pronotum angular; epinotal spines

straight and divergent; postpetiole and gaster shining and sparsely punctate. Length 6 mm. (Argentina).