THE CANADIAN ENTOMOLOGIST. 299 



centre ; (lateral aspect), genal sulcus absent, cheek slightly shorter than 

 the eyes, full ; eyes oval, very slightly narrowed ventrally ; (dorsal aspect), 

 head twice as wide as long, wider than the thorax, slightly narrowed 

 behind the eyes ; occiput immarginate, strongly concave ; ocelli arranged 

 on an obtuse angled triangle, the distance of the lateral ocelli from the 

 eye being about equal to that of the lateral ocelli from each other. 



Thorax : Pronotum visible from above, not so wide as the mesonotum, 

 slightly produced into a neck forward, length about half that of the 

 mesonotum. Mesothorax slightly more coarsely reticulated than the 

 remainder of the thorax ; parapsidal furrow distinct for half the length of 

 the mesonotum, anterior margin rounded ; axilla produced forward to a 

 line drawn from tegula to tegula not meeting by half their width; scutellum 

 rounded, full, slightly more than half the length of the thorax ; post- 

 scutellum narrow, strongly margined. Metathorax shorter than the 

 scutellum, angular posteriorly; spiracles broadly oval; sulci absent; lateral 

 carince well marked : median carina present ; articulation with abdomen 

 high margined ; a distinct circular depression on either side and near to 

 the articulation. 



Abdomen : Broadly ovate, as long as thorax, greatest width at seg- 

 ments 3-4, subsessile ; ovipositor slightly exsericd ; first visible segment 

 the longest, about one and a half limes as long as the second, the five 

 following subequal. 



Wings : Hyaline, submarginal vein slightly longer than one-third of 

 the wing ; marginal vein the same thickness as the submarginal, as long 

 as one-quarter of the wing ; postmarginal and stigraal veins short, sub- 

 equal, the stigmal vein endhig in a short knob, the knob having a short 

 process directed towards the tip of the postmarginal vein. 



Antennse : Pubescent throughout, 13-jointed including the two ring- 

 joints, the scape reaching almost to the median ocellus, moderately slen- 

 der ; the pedicel one and a half times as long as any of the flagellar joints, 

 obconic ; flagellar joints longer than thick, subequal, slightly and regularly 

 clavate. 



Mandibles : Brownish yellow, similar, each quadridentate. 



Male. — Average length, 1.6 mm. Colour similar to female, reflec- 

 tions brighter green mixed v/ith purple. Penis exserted. Antennae 

 shorter, more compact, joints of flagellum shorter than broad and more 

 pubescent. 



