LIST OF DIPTERA. 771 



Tachina Diiriele, n. s. Nigra, scutelli apice fermgineo, palpis 

 antennis pedibusque nigris, alls subcinereis basi subfuscis. 



Body black, clothed with black hairs and bristles: head clothed 

 beneath with hoary hairs : sides of the face ferruginous, fringed with 

 bristles ; epistoma yellow, hardly prominent ; palpi black : feelers 

 black, as long as the face; third joint linear, narrow, almost trun- 

 cated at the tip, nearly four times the length of the second ; bristle 

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

 stout for full one-third of the length, slender from thence to the tip : 

 eyes dark red, hairy : tip of the scutcheon dark ferruginous ; abdomen 

 obconical, not longer than the chest : legs black, clothed with black 

 hairs and bristles ; foot-cushions pale yellow : wings slightly gray, 

 pale brown at the base ; wing-ribs and veins tawny ; veins pitchy 

 towards the tips ; tip cross-vein forming a slightly obtuse angle with 

 the fourth longitudinal vein, slightly curved inward near the base, 

 straight from thence to the tip, joining the border at a short distance 

 above the tip of the wing ; lower cross-vein straight, with the excep- 

 tion of a very slight inward curve near the base, and an almost 

 imperceptible outward curve near the tip ; scales white, with pale 

 tawny borders. Length of the body 3i lines ; of the wings 6 lines. 

 a. England. 



Tachina Thyamis, n. s. Nigro-cinerea capite argenieo micante, 

 thorace trivittato, abdomine basi nigro segmenti 2° lateribus fulvo 

 maculatis, antennis pedibusque nigris, alis fulvis apicibus mar- 

 ginibusque posticis subcineries. 



Body black, covered with hoary bloom, clothed with black 

 hairs and bristles : front of the head adorned with silvery lustre ; 

 epistoma not prominent ; sides of the face without bristles ; mouth 

 and palpi black : eyes dark red, not hairy : feelers black, nearly as 

 long as the face ; third joint rather stout, linear, rounded at the tip, 

 less than twice the length of the second ; bristle about twice the 

 length of the third joint ; first and second joints of moderate length; 

 third stout and spindle-shaped for more than one-third of the length 

 from the base, very slender from thence to the tip : chest with three 

 indistinct broad black stripes : abdomen elliptical, a little longer 

 than the chest, black towards the base ; a large dull tawny spot on 

 each side of the second segment: legs black, clothed with black 

 hairs and bristles ; shanks dark tawny : wings slightly gray, tawny 

 at the base on the fore border, and along the sides of the veins ; wing- 

 ribs tawny ; veins black, tawny towards the base ; tip cross-vein 

 forming a very obtuse angle with the fourth longitudinal vein, 

 slightly curved inward, joining the border a little above the tip of 



