490 bulletin: museum of comparative zoology. 



surface but longer, denser and more oblique on the gula. Thorax 

 with two pairs of very long, slender, flagelliform hairs, one on the 

 humeral angles and one on the posterior corners of the pronotum. 

 Petiole, postpetiole, and gaster with a few long, slender, erect hairs. 

 Antennae and legs with short, subappressed hairs. 



Castaneous; upper surface of head and gaster blackish; mandibles, 

 translucent lateral borders of head and clypeus, antennae and legs 

 paler and more reddish or even slightly yellowish. 



Female. (Fig. 2c). Length 2.6 mm. 



Head only slightly longer than broad, decidedly broader behind 

 than in front, with straight sides, deeply concave posterior border 

 and obliquely truncated posterior corners; in other respects, except 

 for the larger eyes and the presence of ocelli, like the head of the 

 worker. Thorax through the wing-insertions nearly as broad as the 

 head, somewhat longer than high, narrowed in the pronotal region, 

 with bluntly angular humeri. Mesonotum flattened above; scutel- 

 lum convex, with acute, projecting posterior border. Epinotum 

 abrupt and concave in profile, its spines and metasternal angles larger 

 than in the worker, more translucent and compressed. Petiole, 

 postpetiole, and gaster as in the worker. 



Sculpture, pilosity, and color as in the worker, but the upper surface 

 x)f the mesonotum and scutellum is opaque and coarsely longitudinally 

 rugose, with reticulate-rugulose interrugal spaces, the mesopleurae 

 are smooth and shining and the postpetiole is subopaque and finely 

 punctate above. The flagelliform hairs on the humeral angles are 

 shorter and there are numerous erect, slender hairs on the mesonotum. 

 Wings with uniformly brownish membranes, dark brown stigma and 

 resin-colored veins. 



Male. (Fig. 2d, e, and/). Length 2 mm. 



Head longer than broad, with very short cheeks, feebly rounded 

 postocular borders and rather straight, marginate occipital border. 

 Mandibles very small, triangular, with feebly convex external borders 

 and acute tips. Clypeus a little broader than long, subhexagonal, 

 with the anterior border arcuately excised in the middle. Frontal 

 carinae subparallel, reaching to the middle of the head, rather far 

 apart. Antennae long, their scapes scarcely twice as long as broad 

 and scarcely longer than the first funicular joint; all the funicular 

 joints subcylindrical, longer than broad, the terminal joint longest. 

 Thorax shaped much as in the female but broader than the head. 

 Epinotal spines and metasternal angles shorter and blunter, not com- 

 pressed and translucent. Petiole with a slightly more angular node 

 in profile, postpetiole more transverse and less elliptical. 



