358 LIST OF DIPTERA. 



hairs and bristles ; claws black ; foot-cushions tawny : wings slightly 

 tinged with gray ; wing-ribs and veins piceous, the latter black to- 

 wards the tips; poisers pale tawny. Length of the body 3| — 4 

 lines ; of the wings 5 — 6 lines. 



a. Nova Scotia. From Lieut. Redman's collection. 



Group XVIII. 



Dasypogon Laevinus, n. s., mas. Cinereus, abdominis apice rufo, 

 antennis nigris, pedibus rufis, genubus tarsisque apice piceis, alis 

 fulvis. 



Head gray, a little narrower than the chest, clothed thinly 

 above and thickly behind and beneath with yellowish white hairs ; 

 clypeus beset with yellowish white bristles : eyes black ; fore part 

 slightly convex, its facets very little larger than those of the other 

 part : lip black, shining, clothed at the tip with short tawny hairs -: 

 feelers black ; second joint much shorter than the first : chest gray, 

 covered with yellow down, and clothed with pale tawny hairs : abdo- 

 men gray, linear, red at the tip, clothed with pale tawny hairs, nar- 

 rower and longer than the chest, but much less than twice its 

 length ; first and second segments very short ; third and following 

 segments long, but successively decreasing in length to the tip : legs 

 red, clothed with pale yellow hairs; hips gray; knees and tips of 

 feet piceous ; claws black ; foot-cushions dull tawny ; wing-ribs and 

 veins ferruginous, the latter piceous towards the tips ; poisers yellow. 

 Length of the body 4 lines ; of the wings 7 lines. 



a. South Africa. 



Dasypogon Discus, White, Zool. Voy. Erebus and Terror. Fern. — 

 Niger, fulvo pubescens, abdomine rufo disco nigro, antennis tar- 

 sisque nigris, pedibus rufis, alis limpidis, apice cinereis. 



Body black : head covered with tawny down, a little narrower 

 than the chest, covered on each side of the crown with a few black 

 hairs, beset behind the eyes with a row of black bristles, clothed be- 

 neath with long pale yellow hairs ; front and clypeus adorned with 

 bright pale golden down ; clypeus armed with ten long white 

 bristles : eyes black ; fore part nearly flat, distinguished also from 

 the other part by the larger size of its facets : lip black, clothed at 

 the tip with short tawny hairs ; palpi and hypostoma black, clothed 

 with long pale yellow hairs : feelers black ; first and second joints 

 clothed with black hairs; second joint slightly club-shaped, beset 

 with one or two black bristles, a little shorter than the first ; third 

 joint linear, longer than the first and the second ; fourth joint very 



