1903.] NATURAL SCIENCES OF PHILADELPHIA. 253 



foveae. Thorax subopaque, its dorsal surface irregularly reticulate- 

 rugose and foveolate, pleurae, petiole and postpetiole regularly foveo- 

 late-punctate ; posterior epinotal declivity rather coarsely longitudi- 

 nally rugose. Gaster smooth and shining. 



Hairs yellow, not very abundant; clavate on thorax, pedicel and 

 crown of head ; short and erect on head and thorax, longer and some- 

 what reclinate on the pedicel and gaster. Hairs on antennje, legs and 

 sides of head less conspicuous and appressed, except on the antennae, 

 where they are suberect. 



Rather dark reddish-brown, ventral portions of head, thorax and 

 pedicel and the incisures of the gastric segments, yellowish. Legs and 

 antennae yellowish, middle of femora and the antennal club dark- 

 brown. Immature specimens have the thorax and pedicel more 

 extensively yellow. 



Female (dealated). — Length 4.5 mm. 



Mandibles densely striated and somewhat punctate. Clypeus with 

 coarse longitudinal rugae, one of which forms a distinct carina in the 

 middle of the sclerite. Frontal area opaque. Head with coarse and 

 very regular longitudinal rugae, but little diverging behind and but 

 slightly reticulate. On the upper surface of the head there are also a 

 number of shallow but distinct foveolae in the interrugal furrows. 

 Pronotum and pleurae coarsely longitudinally rugose; mesonotum 

 shining, sparsely foveolate and rather indistinctly longitudinally 

 rugose, especially in front. Scutellum and paraptera like the meso- 

 notum, the former with indications of rugae only at its anterior border. 

 Whole epinotum subopaque, coarsely rugose, even over the entire 

 surface of the robust, pointed spines, which are as long as they are 

 broad at their bases. Declivous surface of epinotum regularly trans- 

 versely rugose. Petiole and postpetiole opaque, reticulate and punc- 

 tate-rugose, more coarsely on the sides than on the summits of the 

 nodes ; petiolar node in profile more acute than in the worker. Gaster 

 very glabrous. Head, thorax and pedicel rich reddish-brown; gaster 

 decidedly darker. Legs and antennae yellow. In the latter all the 

 joints of the funiculus are distinctly longer than broad, and the club, 

 which is not infuscated, is indistinct. Wing-insertions black, Hairs 

 on the body sparse, yellow, not clavate like those of the worker, but 

 more or less tapering. 



Male.— Length. 2.5-3 mm. 



Mandibles dentate, overlapping with their blades. Clypeus convex, 

 truncated in the middle in front. Antennae 13-jointed; scape slender, 

 as long as joints 1-5 of the funiculus. First funicular joint fully twice 



