234 PROCEEDINGS OF THE ACADEMY OF [Feb., 



longer than the two preceding joints of the club. Thorax moderately 

 long, its dorsal and pleural surfaces flattened; humeral angles promi- 

 nent and rather sharp; no constriction between the meso- and epinotum. 

 Epinotal spines very short, not longer than broad at their bases, 

 turned upward. Pedicel rather robust; petiole oblong Avhen seen from 

 above, almost twice as long as broad ; sides of the nodal portion nearly 

 parallel, peduncle narrower; in profile the anterior slope is distinctly 

 concave, the posterior strongly convex, the apex of the node rounded; 

 anterior ventral surface with a prominent tooth, directed forward and 

 downward. Postpetiole but little broader than the petiole; nearly 

 as long as broad, subglobose, strongly arched dorsally, its anterior 

 about as broad as its posterior border, the anterior angles rounded, 

 hardly distinct. Gaster of the usual configuration, with small but 

 prominent basal angles. Legs robust. 



Mandibles and clypeus longitudinally rugose, the former finely and 

 indistinctly, the latter more coarsely and distinctly. Head opaque, 

 except the crown and occiput which are more or less shining or lus- 

 trous, covered with foveolate punctures, in addition to which the front 

 and crown are finely longitudinally rugose, the cheeks and sides 

 reticulate-rugose, the lower surface more indistinctly reticulate. 

 Thorax, petiole and postpetiole opaque, or slightly lustrous, densely 

 and evenly foveolate-punctate. Gaster smooth and shining. 



Hairs on the body yellowish-white; erect and clavate on the head, 

 thorax and abdomen; longest on the gaster; on the antennae and legs 

 the hairs are minute, tapering and appressed. 



Head, thorax and pedicel deep reddish-brown, gaster almost or ciuite 

 black; mandibles, antennae and legs red, club of antennae and often also 

 the femora infuscated. 



Female (dealated). — Length 3.5—1 nun. 



Like the worker in coloration, except that the anterior and lateral 

 portion of the mesonotum, the epinotum and dorsal surfaces of the 

 petiolar and postpetiolar nodes may be distinctly infuscated. Whole 

 upper surface of head longitudinally rugose, the rugae diverging to 

 the corners of the head in the postocellar region. Mesonotum and 

 scutellum traversed by numerous parallel longitudinal rugae, which 

 are finer than those on the head ; pronotum finely reticulate, median por- 

 tion of scutellum smooth and shining; pleurae reticulate-punctate, 

 rather rough, the rugae somewhat longitudinal in direction. Epinotal 

 spines very small and tooth-like, rather blunt ; the region between and 

 below them densely foveolate-punccate. Petiole with less convex 



