THE CANADIAN ENTOMOLOGIST 151 



length and together scarcely longer than the third ; labial palpi 

 4-jointed; mandibles 3-toothed, the median tooth longest and 

 acute; the two laterals short and blunt; antennae pubescent, 23-24 

 jointed, a little longer than the body; first joint of the flagellum 

 longer than the second, following joints decreasing in length to 

 the tip. 



Thorax smooth and shining; prothorax short, mostly concealed 

 from above; mesonotum gibbous, polished, without pubescence, 

 except for four or five hairs on each lobe opposite the base of the 

 wings; parapsidal furrows impressed anteriorly for about one- 

 third the length of the mesoscutum, a short longitudinal incision 

 on the median line just before the scutellum, varying somewhat 

 in length, but never extending more than half the length of the 

 mesonotum; scutellar fovea broad and deep, with several carinse 

 crossing it at the bottom; mesopleura? smooth, polished, glabrous, 

 except for a few hairs at the posterior angle, just above the median 

 coxae, and with a shallow longitudinal smooth depression below 

 the middle; metapleurse moderately hairy and mostly rugulose, 

 the disc smooth; propodeum finely rugose, more strongly so pos- 

 teriorly, not conspicuously pubescent, but with a few scattering 

 hairs most abundant laterally. Wings hyaline, iridescent; stigma 

 long, lanceolate, rather broad, extending half the length of the 

 radial cell; radius arising at about the basal one-third of the stigma 

 and attaining the wing margin about half way between the apex 

 of stigma and the extreme wing apex, its first abscissa nearly per- 

 pendicular and slightly longer than the width of stigma; second 

 abscissa slightly straightened toward the wing margin, but not 

 concave beneath, radial cell broad; cubital cross-vein oblique, 

 somewhat longer than the first abscissa of radius; recurrent 

 nervure oblique, joining the first cubital cell before the cubital 

 crossvein, a distance equal to about half the length of the cubital 

 crossvein; first discoidal cell smaller than the first cubital, sub- 

 median cell slightly longer than the median, the second discoidal 

 completely closed. 



Posterior legs longer than the body, the two trochanter joints 

 together about as long as their coxae, tibiae as long as the femora 

 and trochanters combined, tarsi as long as the tibiae, the first joint 

 nearly twice the length of the second. 



