LIST OF DIPTERA. 751 



Tachina Philonis, n. s. Cinerea, capite albo micante, thorace vittis 

 quatuor canis, abdomine cano vario, palpis fulvis, antennis pedi- 

 busque nigris, alis subcinereis ad costam spinosis. 

 Body dark gray, clothed with black hairs arid bristles : head 

 covered with white lustre, thickly clothed behind and beneath with 

 whitish hairs, having a tawny hue on each side of the crown, 

 the middle part being occupied by a black stripe between the eye- 

 lets and the feelers ; face gray, no bristles along its sides except at 

 the base; epistoma not prominent: eyes red, not hairy: sucker 

 black, pitchy, and clothed with pale tawny hairs towards the tip ; 

 palpi tawny, slender, beset with black bristles : feelers black, as long- 

 as the face ; third joint much longer than the second, very slightly 

 concave above, slightly convex beneath, truncated at the tip ; bris- 

 tle full twice the length of the third joint, its first joint extremely 

 short, second joint moderately long ; third joint stout for one-third 

 of the length, slender from thence to the tip : chest adorned with 

 four indistinct hoary stripes; sides and scutcheon hoary : scutcheon 

 and abdomen armed with spines: abdomen black, nearly elliptical, a 

 little longer than the chest ; second segment with a large hoary 

 triangular spot on each side ; third segment hoary, with the excep- 

 tion of the hind border and of an imperfect stripe in the middle ; 

 fourth segment hoary towards the base: legs black, clothed with 

 black hairs and bristles ; foot-cushions tawny: wings slightly gray; 

 a bristle on the fore border of each wing ; wing-ribs tawny ; veins 

 black, tawny at the base ; tip cross-vein forming an obtuse angle 

 with the fourth longitudinal vein, slightly and irregularly curved in- 

 ward from the base to the tip, joining the border at some distance 

 above the tip of the wing ; lower cross-vein straight till near the 

 tip, where it is very slightly curved outward ; scales white, with yel- 

 low borders. Length of the body 4 lines ; of the wings 7 lines. 

 a. England. 



Tachina Nymphidius, n. s. Cinerea, capite plumbeo pilis albis sub- 

 tus hirtissimo, thoracis vittis tribus nigris, scutello abdomineque 

 canis, hujus segmentorum marginibus posticis vittaque dorsali ni- 

 gris, palpis fulvis, antennis pedibusque nigris, alis subcinereis. 

 Body black, covered with gray bloom, clothed with black hairs 

 and bristles: head adorned with bluish white lustre, thickly clothed 

 behind and beneath with whitish hairs, tawny on each side of the 

 crown, the middle part being occupied by a pitchy stripe between 

 the eyelets and the feelers : sides of the face fringed with bristles ; 

 peristoma tawny; epistoma not prominent: eyes red, not hairy: 

 sucker black, pitchy, and clothed with tawny hairs at the tip ; 



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