750 LIST OF DIPTERA. 



hairs and bristles ; foot-cushions yellow : wings nearly colourless : 

 wing-ribs dark tawny ; veins black, yellow at the base ; tip cross- 

 vein forming a very slightly obtuse angle with the fourth longitudi- 

 nal vein, a little curved inward from the base to the tip, which 

 joins the border at some distance above the tip of the wing ; lower 

 cross-vein nearly straight ; scales white, with yellow borders. 

 Length of the body 3£ lines ; of the wings 6 lines. 

 a. England. 



Tachina Pagasus, n. s. Nigro-cinerea, facie fulva, vittis duabus 

 nigris, thorace vittis quatuorf ulv is, abdominejlavo-cinereo, mi- 

 cante, basi segmentorum marginibus posticis vittaque dorsali 

 nigris, palpis fulvis, antennis pedibusque nigris illorum articulo 

 2° tibiisque piceis, alis subcinereis basi subfulvis ad costam 

 spinosis. 



Body grayish black, clothed with black hairs and bristles : 

 head thickly clothed behind and beneath with hoary hairs ; face yel- 

 low with two black stripes, corresponding to the feeders ; a ferrugi- 

 nous stripe along each of its sides, which is fringed with bristles for 

 one-fourth of its length from the base ; epistoma yellow, not promi- 

 nent ; a pitchy stripe between the eyelets and the feelers : eyes red, 

 not hairy : sucker black, clothed with tawny hairs ; palpi tawny, 

 slender, beset with black bristles : feelers black, a little shorter than 

 the face, slightly covered with hoary bloum ; second joint pitchy, 

 ferruginous at the tip ; third joint nearly linear, much longer than 

 the second, rounded at the tip ; bristle less than twice the length of 

 the third joint, its second joint longer than the first; third joint 

 very stout for full one-third of its length, slender from thence to the 

 tip : chest covered with gray bloom, adorned with four dull tawny 

 stripes : abdomen elliptical ; second and following segments covered 

 with yellowish gray lustre, their hind borders black, as is also a stripe 

 on the back : legs black, clothed with black hairs and bristles ; 

 shanks pitchy ; foot-cushions bright tawny : wings slightly gray, 

 with a tawny tinge at the base ; a spine on the fore border of each 

 wing ; wing-ribs and veins tawny ; veins pitchy towards the tips ; 

 tip cross-vein forming a very slightly obtuse angle with the fourth 

 longitudinal vein which has a stump beyond it, curved inward near 

 the base, straight from thence to the tip, which joins the border very 

 near the third vein and a long way above the tip of the wing ; lower 

 cross-vein straight at both ends, but having a long inward curve in 

 the middle ; scales yellow. Length of the body 3i lines ; of the 

 wings 7 lines. 



