706 LIST OF DIPTERA. 



Tachina transiens, n. s. Fusca, capite pectoreque fulvis, abdomine 

 rufo-fusco, segmentorum suturis nigris, antennis nigris, pedibus 

 fulvis, alls fuscis. 



Head brownish tawny, clothed beneath with pale tawny hairs, 

 beset above and in front with black hairs and bristles ; epistoma 

 very prominent ; no bristles on the sides of the face; sucker black, 

 clothed at the tip with a few short pale tawny hairs : eyes pitchy : 

 feelers black, as long as the face ; third joint much longer than the 

 second, slightly convex above, more convex beneath, rounded at the 

 tip ; bristle downy, rather stout, about twice the length of the third 

 feeler-joint, tapering from the base to the tip ; its second joint about 

 twice the length of the first : chest dark brown, clothed with tawny 

 hairs and black bristles ; breast tawny ; scutcheon armed with 

 black spines : abdomen reddish tawny, much longer and broader 

 than the chest, thickly clothed with reddish tawny hairs, armed with 

 a few stout black spines, darker along the middle of the back ; 

 sutures of the segments black : legs tawny, clothed with short 

 black hairs and bristles : claws and foot-cushions pale tawny ; tips 

 of the claws black : wings and scales dark brown ; wing-ribs and 

 veins tawny ; tip cross-vein forming a right angle with the fourth 

 longitudinal vein, 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 with two hardly perceptible curves, the 

 lower inward, the upper outward. Length of the body 5 lines ; of 

 the wings 12 lines. 



a. Quito. Presented by W. Hewitson, Esq. 



Group IX. 



Third joint of the feelers longer than the second, very convex 

 above, flat beneath, rounded at the tip ; second joint of the bristle 

 hardly longer than the first. 



Tachina trianguli, n. s. Fusco-fulva, capite flavo, thoracis lateri- 

 bus pectore scutelloque fulvis, abdomine maculis trigonis nigris 

 ornato, antennis piceis, pedibus fulvis, alis cinereis basi fulvis. 

 Head pale yellow, clothed beneath with pale yellow hairs, beset 

 above and in front with a few black bristles ; epistoma very promi- 

 nent ; no bristles on the sides of the face ; sucker and palpi black, 

 clothed with short black hairs ; palpi tawny at the base, nearly as 

 long as the sucker : eyes pitchy slightly bronzed : feelers pitchy, as 

 long as the face ; third joint longer than the second, very convex 

 above, flat beneath, rounded at the tip ; bristle black, naked, rather 



