326 LIST OF DIPTERA. 



Dasypogon Copreus, n. s., fern. Ferrugineus, thorace flavo-fusco, 

 abdominis segmentis 3°, 4°, 5°, et 6° nigris, antennis pedibusque 

 ferrugineis tarsorum articulis apice nigris, alis fulvis. 



Body ferruginous : head narrower than the chest, thickly 

 clothed behind and heneath with tawny hairs, beset behind the eyes 

 with a row of tawny bristles ; clypeus armed with about fourteen 

 pale yellow spines : eyes black ; fore part flat, dark bronze, its fa- 

 cets larger than those of the other part : lip black, long, clothed at 

 the tip with short tawny hairs ; palpi ferruginous, clothed with taw- 

 ny hairs and bristles : first and second joints of the feelers ferrugi- 

 nous ; first joint beset with some short black hairs ; second joint 

 much longer than the first : neck with a cross-row of tawny bristles ; 

 chest yellowish brown, thinly clothed with tawny hairs, beset on 

 each side and behind with long black bristles : breast clothed with 

 a few tawny hairs : abdomen tapering from the base to the tip, nar- 

 rower than the chest and more than twice its length, thinly clothed 

 with short tawny hairs, shining towards the tip ; segments from the 

 third to the sixth black, excepting their hind borders; first and 

 second segments short ; third and following segments long, but suc- 

 cessively decreasing in length : legs ferruginous, thinly clothed with 

 short black hairs, and beset with black spines ; tips of the joints of 

 the feet and claws black ; foot-cushions tawny ; tips of fore shanks 

 armed with a black curved tooth corresponding with some black 

 tubercles at the base of the feet : wings tawny ; wing-ribs and veins 

 piceous, the latter black towards the tips ; poisers tawny. Length 

 of the body 13 lines ; of the wings 21 lines. 



Dasypogon Silanus, n.s., mas. Fuscus, thorace ferrugineo bivit- 

 tato, capite pectore thoracisque lateribus fulvis, antennis pedi- 

 busque ferrugineis, alis fulvis apicibus subcinereis. 



Head tawny, a little narrower than the chest, beset behind the 

 eyes with a row of black bristles, clothed beneath with pale tawny 

 hairs ; clypeus armed with long pale yellow bristles : eyes black ; 

 fore part slightly convex, its facets but little larger than those of 

 the other part : lip black, clothed at the tip with short tawny hairs ; 

 palpi ferruginous, their tips beset with ferruginous hairs : feelers 

 ferruginous ; second joint much longer than the first, very slightly 

 club-shaped, beset with a few black hairs ; third joint spindle- 

 shaped, a little longer than the first and the second joints : ridge of 

 the neck beset with a row of black bristles : chest reddish brown, 

 with two slender indistinct ferruginous stripes, beset on each side 

 and behind with black bristles ; breast and sides of the chest tawny, 

 covered with shining down: abdomen brown, slightly tapering from 



