226 PROCEEDINGS OF THE ACADEMY OF [Feb., 



rounded. Anteniije 1 1-jointed ; scape reaching midway between the eye 

 and the posterior angle of the head; first funicular joint not longer than 

 joints 2-3 together; terminal joint distinctly longer than the two pre- 

 ceding joints of the club. Thorax long, subcylindrical, somewhat nar- 

 rowed behind, dorsally flattened, its anterior angles rounded; pro- 

 mesonotal and mesoepinotal sutures both distinct, a slight but distinct 

 constriction at the latter. Epinotal spines rather short and blunt, 

 compressed, in many specimens tooth-like and hardly longer than 

 broad at the base, directed backward in a line with the dorsal surface 

 of the epinotum, in no case longer than their distance apart at the base. 

 Petiole from above oblong, not more than H times as long as broad, 

 the node in profile with evenly concave anterior and somewhat de- 

 pressed but convex posterior slope. Postpetiole trapezoidal, distinctly 

 broader than long, its anterior angles prominent, anterior border 

 distinctly broader than the posterior, dorsal surface hemispherical in 

 profile. 



Mandibles shining, coarsely punctate. iMedian impressed surface of 

 clypeus smooth and shining, lateral surfaces longitudinally rugose. 

 Head opaque, longitudinally reticulate rugose, the rugse being most 

 distinctly longitudinal on the front, vertex and cheeks. Thorax 

 opaque, covered wdth reticulate rugae w^hich have a decidedly longi- 

 tudinal trend on the dorsal and lateral surfaces of the pronotum and 

 on the dorsal surface of the epinotum and the mesopleurce. On the 

 mesonotum the reticulation resolves itself into an area of even, close-set 

 foveolse. Pedicel opaque, the petiole sculptured like the mesonotum, 

 the postpetiole somewhat smoother and almost punctate. Gaster 

 smooth and shining. 



Hairs whitish; those on the head, thorax and pedicel short, rigid 

 and subclavate, on the gaster longer and thinner; on the antennse and 

 legs dehcate, appressed. 



Color dark-brown, almost black; small joints of the funiculus, the 

 metatarsi, bases of femora, trochanters, ventral surface of pedicel, 

 and in many specimens also the sutural regions of the thorax, yellow 

 or pale-brown. In some specimens (immature?) nearly the whole 

 thorax and the whole of the tibiae are yellow. 

 Female (dealated). — Length 3.75-4 mm. 



Apart from the distinctively sexual characters, the female differs 

 from the worker in the following characters : The reticulate rugosity of 

 the head is more decidedly longitudinal, the rugae running back regu- 

 larly to the occiput without deviation at the ocellar region. Meso- 

 notum, scutellum and pleurte traversed by distinct longitudinal rugae. 



