848 LIST OF DIPTERA. 



facials red : eyes bright red, not hairy : sucker black, ferruginous 

 and clothed with tawny hairs at the tip ; palpi tawny, beset with 

 black bristles : feelers pale ferruginous, much shorter than the face ; 

 third joint about twice the length of the second, black, ferruginous 

 at the base, very slightly decreasing in depth from the base to the 

 tip, which is rounded : chest and breast slightly tinged with gray ; 

 chest indistinctly striped : abdomen adorned with tawny reflections, 

 oval, a little broader, but not longer than the chest ; under side 

 hoary : legs tawny, clothed with black hairs and bristles ; feet 

 black ; foot-cushions and claws tawny ; tips of the claws black : 

 wings nearly colourless ; wing-ribs and veins tawny ; veins pitchy 

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

 the fourth longitudinal vein, slightly and irregularly curved inward 

 along the whole length, joining the border at a short distance above 

 the tip of the wing ; lower cross-vein curved inward near the base, 

 straight from thence to the tip, where it is just inclined outward ; 

 scales white. Length of the body 4 lines ; of the wings 9 lines. 



a. North America. Presented by the Entomological Club. 



Dexia Isapis, n. s., mas. Nigro-cinerea, thoracis lateribus anticis 

 fulvis, abdomine fulvo apice nigro, antennis piceis basi fulvis, 

 pedibus fulvis, tarsis nigris^ alis snbcinereis. 



Allied to Tachina. Body black, clothed with black hairs and 

 bristles ; head adorned with white lustre : a pitchy stripe fringed 

 with bristles between the eyelets and the feelers ; epistoma not pro- 

 minent ; sides of the face fringed with bristles at the base : eyes 

 pitchy; fore part flat, composed of larger facets than those else- 

 where : sucker pitchy, tawny and clothed with tawny hairs at the 

 tip ; palpi tawny, beset with black bristles : feelers bright tawny, 

 as long as the face ; third joint pitchy, tawny at the base, slender, 

 linear, truncated at the tip, full six times the length of the second 

 joint ; bristle black, downy along the whole length, tawny at the 

 base, very much longer than the third joint: chest tinged with gray, 

 tawny on each side in front : abdomen tawny, spindle-shaped, 

 slightly compressed, ferruginous and marked with black towards the 

 tip, nearly twice the length of the chest : legs tawny, clothed with 

 black hairs and bristles ; shanks darker than the thighs ; feet black ; 

 foot-cushions tawny : wings narrow, slightly gray ; wing-ribs tawny, 

 veins pitchy, tawny towards the base ; tip cross-vein forming hardly 

 more than a right angle with the fourth longitudinal vein (which 

 projects somewhat beyond it), slightly curved inward near the base, 

 straight from thence to the tip, joining the tip of the third longitu- 

 dinal vein ; lower cross-vein with two curves ; the lower inward , 



