104 
William Morton Wheeler 
ocelli and 11-jointed antennse. The scapes are long, reaching beyond 
the posterior corners of the head, the funicnlar joints subequal, fnlly 
3 times as long as broad, the first joint not shorter, but a little more 
swollen than the succeeding joints, the terminal joint twice as long 
as the pennltimate. Mandibles small, apparently dentate. Thorax 
elongate elliptical. Petiolar node low and rounded, transversely 
elliptical, a little broader than long. Genital appendages prominent, 
slender; stipites long, digitiform. Legs long and slender. The wings 
overlap oneanother on the back of the specimen and are so trans- 
parent as to show almost no traces of the venation. Both the discal 
and cubital cells seem to be absent. The stigma is large and trian- 
gulär. The surface of the body, scapes and legs is shining and finely 
punctate; the hairs on the body and appendages are rather dense, 
very short and reclinate. The color of the specimen is dark brown. 
Tribe Oecophyllini Emery. 
Genus Dimorphomyrmex Ern. Andre. 
JDimorphomyvmex theryt Emery. (Fig. 50.) 
Dimorphomyrmex Theryi Emery, Bull. Soc. Ent. France, 1905, p. 188. Fig. 1, £; 
Handlirsch Foss. Insekt. 1908, p. 868; Wheeler, Psyche, XVII, 
1910, p. 132. 
Worker major and media. Length 6 — 8 mm. 
Head a little longer than broad, subrectangular, a little narrower 
in front than behind, with straight sides, rounded posterior corners 
and feebly concave posterior border, not very convex above, flattened 
below. Eyes large and convex, elongate elliptical or slightly reniform, 
scarcely more than 1 / 3 as long as the head and near the middle of 
the sides of the latter but not visible when the head is seen from 
below, slightly more approximated in front than behind. Ocelli pre- 
sent, at least in the worker major, possibly absent in the smaller 
medise. Frontal carinse short but prominent, extending to the middle 
of the anterior orbits. Frontal area small and indistinct; frontal 
groove present but short and shallow. Clypeus flat, broader than 
long, its posterior border extending back medially between the frontal 
carinae and with its rounded and entire or very feebly excised anterior 
border projecting in the form of a short broad lobe. Mandibles stout, 
broad at their insertions, with evenly convex external and 8 — 9-toothed 
apical borders, not decussating when closed. The teeth are stout 
and blunt, the apical longest but shorter teeth alternating with the 
longer towards the base. Antennse short, 8-jointed; scapes not rea- 
ching to the posterior orbits, incrassated at their tips; joints 1 and 2 
