246 PROCEEDINGS OF THE ACADEMY OF [Feb., 



second funicular joint about as long as broad, the remaining joints 

 broader than long. Thorax rather short, its humeral angles rounded, 

 dorsum evenly and slightly rounded, without mesoepinotal constriction. 

 Epinotal spines moderate, distinctly shorter than the decUvous sur- 

 face of the epinotum, scarcely as long as their distance apart at the 

 base, rapidly tapering, acute, directed upward, outward and backward, 

 their tips slightly deflected. Petiole from above fully Ih times as 

 long as broad; its sides somewhat convex, so that its outline is sub- 

 elliptical; in profile the anterior slope is abrupt and distinctly concave, 

 the summit of the node flattened, and the posterior slope suddenly 

 declivous; ventral tooth small, acute, directed downward. Post- 

 petiole very large, fully twice as broad as the petiole; broader than 

 long, its anterior and posterior angles rounded, so that it appears 

 transversely elliptical from above; in profile it is very convex, espe- 

 cially in front. Gaster elliptical, depressed, without distinct anterior 

 angles. 



Mandibles coarsely striated. Clypeus traversed by several clean-cut 

 longitudinal rugae, subsiding on the posterior portion which is smooth 

 and shining. Head subopaque, coarsely reticulate-rugose; the rugae 

 distinctly longitudinal only on the front and vertex ; interrugal spaces 

 secondarily reticulate. Neck evenly reticulate; thoracic dorsum very 

 coarsely and irregularly reticulate-rugose; the spaces between the 

 rugae smooth and shining, because the secondary reticulation is indis- 

 tinct or lacking. Pleurae somewhat more delicately and evenly rugose. 

 Petiole and postpetiole coarsely reticulate-rugose, interrugal spaces 

 filled with shallow foveolae or secondary reticulation. Gaster smooth 

 and shining. 



Hairs white, rather numerous and prominent; on the trunk clavate; 

 shorter and more erect on the head and thorax, longer and slightly 

 reclinate on the pedicel and gaster; on the legs and antennae distinct, 

 non-clavate, more or less appressed. 



Black or very dark-brown, especially on the head, thorax and petiole. 

 Mandibles, excepting the teeth, funiculus, tips of epinotal spines, tarsi 

 and articulations of legs, excepting the last tarsal joint, yellow; an- 

 tennal scape brown. 



Female. — Length 3.75-4 mm. 



Head more decidedly and extensively longitudinally rugose than 

 in the worker. Neck delicately, pronotum more coarsely reticulate- 

 rugose; mesonotum and paraptera traversed by numerous longitudinal 

 rugae which are more or less interrupted and have a tendency to anas- 

 tomose. Scutellum with such rugae only in front and on the sides, 



