336 bulletin: museum of comparative zoology, 



middle; bidentate at anterior border. Mandibles stout, their blades armed 

 with six or seven small teeth and a large subapical tooth about as long as the 

 terminal one. Antennal scapes extending to the occipital corners; first joint 

 of funiculus three times as long as the very short second joint; joints three to 

 eight transverse, but not strongly so ; club as long as the rest of the funiculus, 

 the terminal joint longer than the two others together. Prothorax three times 

 as broad as epinotum; humei'al and inferior corners angulate. Epinotal base 

 sloping and separated from declivity by a transverse border; declivity convex; 

 spines stout at base and acuminate at apex, as long as the declivity. Node, 

 from above, quadrangular, anterior corners angulate; in profile longer than 

 high, with a sloping anterior face equal in length to the straight dorsal surface. 

 Postpetiole broader than long and quadrangular. 



Somewhat shining. Head with coarse striae, which are straight and parallel 

 in front and somewhat irregular and oblique at sides. Clypeus and mandibles 

 finely punctate and shining. Striae of thorax strong, longitudinal, and extend- 

 ing to epinotum where they become more feeble apically. Epinotal declivity 

 smooth and shining. Petiole and postpetiole with widely separated costae, 

 the spaces between smooth and shining. Legs sparsely punctate and shining. 

 Gaster finely punctate and more shining than the other parts. 



Head, body, mandibles, and legs with very abundantly and finely pilose. 



Black. Mandibles, antennae, and legs brownish red, in some specimens the 

 lower part of femora darker than the rest. Pilosity gray. 



Mab. Length 2.75 mm. 



Head, excluding eyes, as broad as long, and broadly rounded behind. 

 Cheeks very short. Clypeus transverse, with truncate anterior border. 

 Antennal scape as long as the first two funicular joints together; first funicular 

 joint a little more than half as long as second; second joint twice as long as 

 broad and a little longer than the third; joints three to eleven subequal, 

 each a little less than twice as long as broad; terminal joint longer than the 

 two preceding joints together. Prothorax convex in front', flattened behind, 

 with strong Mayrian furrows. Scutellum transverse and moderately convex. 

 Epinotum with equal base and declivity, which are separated by an acute 

 margin; spines stout and triangular. Petiole longer than in the worker, and 

 the anterior surface proportionally shorter. 



Shining. Head smooth except for a few fine striae inward from the eyes 

 and between the ocelli, and minute punctures. Pro- and mesothorax very 

 finely punctate and with sparse and coarse punctures apically. Scutellum 

 almost smooth on disc, rugose laterally. Base of epinotum with six or seven 

 strong longitudinal striae. Petiole and postpetiole sculptured as in worker. 

 Gaster very shining. 



Head, body, and appendages with abundant, long, fuscous pile. 



Black; mandibles, antennae, and legs rufous, femora darker; genitalia white. 

 Wings pilose, slightly infuscated, with brown veins and stigma. 



