96 THE CANADIAN ENTOMOLOGIST. 



mon size and shape ; the apical joint longer than the others, cylindrical, 

 tip a little pointed, light brown ; labial palpi of unusual length, longer 

 than the head, about 3 m.ra.; second joint about thrice the length of the 

 last maxillary joint, much stronger, hairy, a little incurved, suddenly thick- 

 ened above just before tip, where it is brownish ; last joint as long as the 

 second, strongly clavate before the short, fine, cylindrical tip, hairy, yel- 

 lowish inside, externally brown, blackish on the club. Antennae nearly 

 as long as head and thorax, strong, thicker to tip, fuscous, annulated with 

 yellowish, the two basal joints and basal half of antenna below yellowish ; 

 vertex elevated, pale yellow, on top a transversal black line interrupted in 

 the middle, where is a black spot, and a second transversal line formed by 

 four black spots, besides some black dots near the occiput. Prothorax a 

 little longer than broad, narrowed before and rounded ; pale with whitish 

 villosity ; two fuscous longitudinal bands, approximate and reaching the ** 

 front margin ; on each side, more distant, a fuscous band, ending in the 

 transversal furrow with a black spot ; below along the side margin a black 

 stripe ; mesothorax pale yellow with short black bands, forming three 

 forks, open behind, and a similar on the hind middle part ; metathorax 

 with a black cross ; sides of the thorax yellow, with a black maculose 

 longitudinal band. Abdomen of male considerably longer than the wings, 

 slender, with whitish villosity, intermixed with brown hairs on the apical 

 half, fuscous below, above with a broad yellow band, divided by a fuscous 

 line on the segments 1 to 4 ; a yellowish median line on the three last 

 segments, and some lateral marks ; appendages very short, cylindrical, 

 going downwards, a little divergent, yellow with a black stripe above, 

 strongly clothed with black hairs. I can not find below them any middle 

 part or plate. Abdomen of female as long as the wings, blackish-fuscous, 

 with two yellow dorsal bands from the third segment to apex ; genitals 

 light brown with a row of strong black spines ; below two short cylindri- 

 cal appendages with long black hairs. Legs short, pale yellow, moderately 

 sprinkled with black, with strong black spines and on the interior of the 

 anterior femora with white spines ; tibia with a fine black ring near the 

 base ; tip of tibia and all joints of tarsi black ; spurs brown, strong, as 

 long or a little longer than the two basal joints. Wings hyaline, ptero- 

 stigma white after a brown spot ; costals simple, a few forked before the 

 pterostigma ; veins fuscous interrupted with pale, near the submediana 

 fumose, forming a more or less visible longitudinal dark line ; near the 



