LIST OF DIPTERA. 359 



short ; fifth joint obsolete : chest covered with tawny down, which 

 forms two stripes in the middle, thinly clothed with short black hairs, 

 and beset on each side with some black bristles : breast covered with 

 pale tawny down, having a hoary tinge : abdomen above black, and 

 thinly clothed with very short pale tawny hairs, red at the tip and 

 along the sides, tawny and shining beneath, almost linear, nearly as 

 broad as the chest and more than twice its length ; first and second 

 segments short ; third segment long, with a cross row of punctures 

 along the furrow near its base ; the following segments successively 

 decreasing in length : legs red, almost hairless, beset with black 

 spines, which are much more numerous on the feet than on the 

 shanks or on the thighs ; thighs paler at the base ; feet black, red at 

 the base ; claws black ; foot-cushions pale brown ; a black stripe on 

 each fore thigh ; tips of fore shanks armed with a black curved tooth, 

 corresponding with some black tubercles at the base of the fore feet : 

 wings colourless, gray at the tips ; wing-ribs ferruginous ; veins pi- 

 ceous, black towards the tips ; poisers large, yellow. Length of the 

 body 6 lines ; of the wings 11 lines. 



a. New Zealand. From Mr. Earl's collection. 



Group XIX. 



Dasypogon Venno, n. s. Niger, thorace rufo nigro univittato et bi- 

 maculato, abdomine purpureo, antennis pedibusque nigris, alis 

 nigris apice limpidis. 



Body black : head a little broader than the chest, with a stripe 

 of white down on each side of the front between the feelers and the 

 clypeus ; the latter is armed with six long black bristles : lip black, 

 short: eyes bronze-black, flat in the front, where the facets are 

 larger and distinct from those of the convex part : feelers black, a 

 little longer than the head : first and second joints beset with black 

 hairs; second joint a little shorter than the first; third joint 

 slightly club-shaped, very much longer than the first and the second, 

 but not twice their length : chest and breast bright red ; a black 

 stripe on the back, and a black spot at the base of each wing ; a 

 space about the hips is also black : abdomen purple, shining, linear 

 for a short space from its base, elliptical thence to the tip, fringed 

 with white hairs on each side, a little narrower than the chest and 

 twice its length, hoary on each side at the base : legs black, slender, 

 clothed with black hairs and bristles ; claws black ; foot-cushions 

 piceous : wings black for two-thirds of the length from the base, co- 

 lourless thence to the tips ; wing-ribs and veins black ; poisers 



