518 WHEELER. 



nearly as high as the length of the segment, conical in profile, with 

 strongly concave anterior and abrupt and feebly convex posterior slope. 

 Seen from above the petiole through the node is about one half as 

 broad as its length. Postpetiole shaped like the petiolar node in 

 profile but somewhat lower, from above a little longer than broad 

 and a little broader than the petiole. Gaster rather large, broadly 

 elliptical. Legs moderately slender; spurs distinct on the median 

 and hind tibiae. 



Shining; mandibles densely striated, clypeus and antennal scapes 

 finely longitudinally rugulose. Anterior portion of head to a short 

 distance behind the eyes finely punctate and feebly longitudinally 

 rugose. Posterior portion of head more shining, more sparsely and 

 more superficially punctate. Pro- and mesonotum above smooth and 

 shining, feebly shagreened; pleurae and epinotum punctate-rugulose 

 and subopaque, the rugules on the base of the epinotum very fine, 

 transverse. Petiole and postpetiole finely shagreened, feebly shining. 

 Gaster very smooth and shining, superficially but distinctly shagreened, 

 with sparse piligerous punctures. Legs moderately shining, finely 

 shagreened. 



Hairs yellowish; coarse, sparse and erect on the body, very short 

 and subappressed on the antennal scapes and legs. 



Yellowish red; legs more yellowish; gaster black or very dark 

 brown, posterior borders of segments and anal region testaceous. 



Female. Length about 7 mm. 



Head scarcely longer than broad, distinctly broader behind than in 

 front, with more rounded posterior corners than in the worker. Thorax 

 through the wing-insertions as broad as the head through the eyes. 

 Epinotum with two strong, acute spines, which are as long as broad 

 at their bases. In profile the declivity is concave and distinctly 

 shorter than the nearly straight, sloping base. Both the petiole and 

 postpetiole, with their nodes, more compressed anteroposteriorly 

 than in the worker. Wings rather long (8 mm.). 



In sculpture, pilosity and color resembling the worker, but the head 

 more opaque and more rugose behind. Pronotum transversely rugu- 

 lose, mesonotum and scutellum and portions of mesopleurae smooth 

 and shining; epinotum subopaque, its base transversely, its sides 

 longitudinally rugulose. IMesonotum with three elongate brown 

 blotches. Wings grayish hyaline, with pale brown veins and con- 

 spicuous dark brown stigma. 



Male. Length nearly 4 mm. 



Head a little longer than broad, flattened, rounded behind, with 



