LIST OP DIPTERA. 



Group VII. 



Third joint of the feelers very little longer than the second, flat 

 above, deepening beneath from the base to the tip, which is ob- 

 liquely truncated ; second joint of the bristle twice the length of the 

 first. 



Tachina constans, n. s. Fusco-fulva, capite fiavo, pectore cano, ab- 

 domine rufo maculis nigris ornato, antennis fulvis articulo 3° 

 nigro, pedibus fulvis, tibiis anticis tarsisque Jlavis, alls fuscis. 

 Jnrinia rufiventris? Macq. Dipt. Exot. ii. 2, 41, 7, pi. 3, f. 9. 

 Head pale yellow, clothed beneath with pale yellow hairs, be- 

 set above and in front with black bristles; epistoma very prominent, 

 no bristles on the sides of the face ; crown brown ; sucker black, its 

 tip pitchy and clothed with short whitish hairs : eyes pitchy : feel- 

 ers tawny, as long as the face ; third joint black, very little longer 

 than the second joint, flat above, deepening beneath from the base 

 to the tip, which is obliquely truncated ; bristle downy, rather stout, 

 tapering, not near twice the length of the third feeler-joint, its se- 

 cond joint twice the length of the first: chest brownish tawny, 

 clothed with black hairs and bristles ; breast hoary ; scutcheon 

 armed with black spines : abdomen deep red, with a row of black 

 spots along the back, armed with stout black spines, which are 

 mostly disposed in clusters on the back and along the sides of the 

 hind borders of the segments, and are especially thick at the tip : 

 legs tawny, beset with black hairs and bristles ; feet and fore shanks 

 yellow, the former clothed with pale yellow hairs and bristles; 

 claws and foot-cushions pale yellow, tips of the claws black : wings 

 and scales pale brown ; wing-ribs and veins tawny ; tip cross-vein 

 forming an almost right angle with the fourth longitudinal vein, 

 much curved inward near the base, straight from thence to the tip, 

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

 lower cross-vein straight till near the tip, where it is slightly curved 

 outward. Length of the body 6 lines ; of the wings 14 lines. 

 a. Venezuela. From Mr. Dyson's collection. 



Group VIII. 



Third joint of the feelers much longer than the second, slightly 

 convex above, more convex beneath, rounded at the tip ; second 

 j oint of the bristle about twice the length of the first. 



3q 3 



