THE CANADIAN ENTOMOLOGIST. 211 



intermediate coxae, posterior margin of collar, a small and a large spot 

 beneath anterior wings, broad bands on scutellum and postscutellum, large 

 ovate spot on each side of metathorax (irregular and tinged with ferrugin- 

 ous within), broad band at apex of first segment of abdomen, sharply 

 emarginate and bordered with ferruginous anteriorly, interrupted band at 

 apex of second segment, small spot on each side of third segment and 

 line on each side of second ventral segment, all pale yellow. Legs dull 

 yellow, paler anteriorly and on tarsi, the four anterior coxae above and the 

 posterior pair except at apex, and a stripe on the four posterior femora 

 above, piceous-black ; pul villus and tips of tarsal claws fuscous. Antennae, 

 tubercles, tegulae and line above honey-yellow, basal joints of antennae 

 yellow beneath and fuscous above. Sides of the first abdominal segment 

 and the apical margin beneath, spot at tip of fifth segment and the sixth 

 entirely, ferruginous ; narrow borders of all the abdominal segments 

 testaceous. AVings brown with a purple reflection, darker about the mar- 

 ginal cell, costa and stigma testaceous. Antennae slender, curved, apical 

 joint slightly narrowed towards tip. Front broad, sparsely punctured ; 

 eyes narrow, slightly sinuate within ; clypeus twice as broad as long, the 

 suture nearly straight, disk swollen, margined and truncate anteriorly, the 

 upper lateral angles reaching the eyes ; labrum transverse, ciliate ; mandi- 

 bles with only one tooth near the apex ; head broader than usual poster- 

 iorly and limited by a sharp circular carina. Four longitudinal grooves 

 on mesothorax anteriorly ; base of both the scutellum and postscutellum 

 transversely depressed and the groove divided by longitudinal carinae ; 

 enclosure of metathorax marked off by two similar depressions, the 

 enclosure with a median groove extending to the apex and several irregular 

 grooves or carinae at base which do not extend much beyond the middle ; 

 sides of " propodeum " swollen and distinctly separated from the remainder 

 of the thorax and from each other, striate and sparsely punctate towards 

 the median line, elsewhere smooth and polished. Basal segment of the 

 abdomen more slender than in H. phaleratus (Say), slightly swollen at 

 the apex beneath; second ventral segment transversely depressed at the 

 base, not produced ; enclosure on sixth segment broad (much broader 

 than in any other species known to me), rounded at tip, sparsely punctured 

 and with a smooth margin. Second submarginal cell much narrowed 

 towards the marginal, receiving both recurrents beyond the middle and 

 near together ; the third submarginal cell large ; submarginal nervine 

 reaching border of wing ; submedial cell of posterior wings extending 



