226 THE CANADIAN ENTOMOLOGIST 



joint. Head thin, triangular, the antennae inserted sHghtly 

 below the middle of the face, 10-jointcd, the club solid and ovate, 

 longer than any of the funicle joints, but slightly shorter than the 

 simple, cylindrical scape; pedicel obconic, short, subequal to joint 4 

 of the funicle, bearing from one side of its apical margin a single, 

 very long, slender but stiff bristle-like seta, which reaches distad 

 nearly to the apex of joint 3 of the funicle. Proximal funicle joint 

 longest, nearly twice the length of the pedicel, all the funicle joints 

 obconic, widening distinctly distad, all more or less prolonged ob- 

 tusely from one apical corner, the distal joints more so. None of 

 the joints petiolate or subpetiolate; no ring-joint. Mandibles long 

 and falcate, acute at apex, the right with two large triangular teeth 

 within, the left one which is larger than either of those of the right; 

 also exteriorly at base each with a large tooth. From beneath the 

 clypeus there projects a flat, palmate (9-digitate) brownish plate, 

 above and between the mandibles; clypeus convex along the distal 

 margin, the latter with two teeth on each side of its end, the first 

 very obtuse, the second more tooth-like, but not large. Ocelli 

 nearly in a straight line across the vertex, the cephalic one within 

 and at the apex of the short scrobicular cavity. Parapsidal furrows 

 complete, with deep punctures. Scutellum normal, terminating 

 in a short plate whose distal margin is entire though convex. Tho- 

 rax elevated convexly in places, but the convexities obtuse. A 

 rather large, tooth-like plate from the lateral aspect of the thorax 

 som.e distance beneath the axilla. Thorax with large, irregular 

 reticulations or narrow carinate lines, but not punctate excepting 

 the large punctures in sutures. Abdomen with a distinct petiole, 

 which is m.oderate in length, depressed, diamond-shaped from dor- 

 sal aspect, opaque. Proximal tarsal joints of all the legs long and 

 slender. Venation obscure, the stigmal and postmarginal veins 

 short, much shorter than the marginal, the stigmal the longer of the 

 two, curved or bent like a boomerang. Wings hyaline, all ciliation 

 nearly absent; a trace of marginal cilia disto-caudad. From lateral 

 aspect, scutellum appearing as if terminating in a short, acute 

 tooth. 



Male. — Not known. 



Type: The following species {purpurea). 



