LIST OF DIPTERA. 753 



Tachina Olizon, n. s. Canescens, capite argenteo micante, palpis 

 fulvis, antennis pedibusque nigris, alis limpidis basi fulvis ad 

 costam spinosis. 



Body black, shining, slightly covered with hoary bloom 

 clothed with black hairs and bristles : front of the head adorned 

 with silvery lustre ; epistoma rather prominent : sides of the face 

 not fringed with bristles : eyes dark red, somewhat hairy : sucker 

 pitchy, ferruginous, and clothed with pale tawny hairs towards the 

 tip ; palpi slender, dark tawny, beset with black bristles : feelers 

 black, shorter than the face; second joint ferruginous at the tip; 

 third joint much longer than the second, slightly convex above and 

 beneath, almost truncated at the tip ; bristle about twice the length 

 of the third joint; its first joint obsolete ; second joint very short ; 

 third joint stout, though tapering for one-fourth of the length, very 

 slender from thence to the tip : abdomen elliptical, a little longer 

 and broader than the chest: legs black, clothed with black hairs and 

 bristles ; foot-cushions tawny : wings colourless, tawny at the base ; 

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

 vein forming an extremely obtuse angle with the fourth longitudinal 

 vein, quite straight, joining the border at some distance above the 

 tip of the wing ; lower cross-vein with two slight curves, the lower 

 inward, the other outward ; a stout spine on the fore border of each 

 wing ; scales white, with yellow borders. Length of the body 3i 

 lines ; of the wings 7 lines. 

 a. England. 



Tachina Masurius, n. s. Cinerea, capite albo micante, palpis fulvis, 

 antennis ferruqineis articulo 3° nigro, pedibus fulvis, tarsis ni~ 

 gris, alis fuscis. 



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

 and bristles : head adorned with white silky lustre ; crown black ; 

 sides of the face fringed with bristles along half the length from the 

 base ; epistoma not prominent : eyes red, not hairy : palpi tawny, 

 beset with black bristles : feelers ferruginous, short, not more than 

 half the length of the face ; third joint black, much longer than the 

 second, flat above, convex beneath, truncated and rising at the tip ; 

 bristle black, more than twice the length of the third joint, its first 

 joint obsolete ; second joint very short ; third joint stout for less 

 than one-fourth of the length, slender from thence to the tip : abdo- 

 men obconical, a little longer than the chest : legs tawny, clothed 

 with black hairs and bristles ; feet black ; foot-cushions dark tawny : 

 wings brown ; wing-ribs pitchy ; veins black ; tip cross-vein form- 

 ing a very obtuse angle with the fourth longitudinal vein, slightly 



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