840 LIST OF DIPTERA. 



ribs ferruginous; veins black, ferruginous at the base; tip cross- 

 vein forming a slightly obtuse angle with the fourth longitudinal 

 vein, a little curved inward, joining the border at a short distance 

 above the tip of the wing ; lower cross-vein nearly straight, but hav- 

 ing two almost imperceptible curves ; the lower inward, the other 

 outward, and succeeded by a very obtuse outward angle ; scales 

 tawny. Length of the body 6£ lines ; of the wings 14 lines. 

 a. Brazil. Presented by Dr. Sinclair. 



Dexia Thomse, Wied. Auss. Ziveif. ii. 379, 18. 

 a. Jamaica. From Mr. Gosse's collection. 



Dexia gracilis? Wied. Auss. Zweif. ii. 373,8. 



Dexia Harpasa, n. s., mas. Nigra, capite cano, thorace cinereo 

 subvittato, scutelli apice ferrugineo, abdomine cano tessellato, pal- 

 pis Jlavis, antennis ferrugineis basi fulvis, pedibus nigris, tibiis 

 ferrugineis, alis jiavo-fuscis margine postico sublimpidis. 

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

 bristles : head adorned with a hoary covering, clothed beneath with 

 yellowish white hairs ; facials red ; a dark ferruginous stripe fringed 

 with bristles between the eyelets and the feelers ; sides of the face 

 prominent and fringed with bristles at the base ; peristoma and 

 epistoma yellow, the latter slightly prominent : eyes red : sucker 

 black, ferruginous and clothed with tawny hairs at the tip ; palpi 

 yellow, club-shaped, beset with black bristles : feelers tawny, not 

 more than half the length of the face ; third joint ferruginous, a 

 little longer than the second, slightly decreasing in depth from the 

 base to the tip, which is rounded ; bristle black, deeply feathered 

 from the base to the tip, much more than twice the length of the 

 third joint: chest and breast adorned with a gray covering, the 

 former indistinctly striped ; scutcheon ferruginous towards the tip : 

 abdomen elliptical, adorned with hoary reflections, as long and 

 as broad as the chest : legs black, clothed with black hairs and bris- 

 tles ; shanks dark ferruginous ; foot-cushions dark tawny : wings 

 tinged with yellowish brown, nearly colourless along the hind bor- 

 ders ; wing-ribs tawny ; veins black, tawny at the base ; tip cross- 

 vein forming a slightly obtuse angle with the fourth longitudinal 

 vein, very little curved inward near the base, straight from thence to 

 the tip, joining the border at some distance above the tip of the 

 wing ; lower cross-veiu with two very slight curves, the upper out- 

 ward, rather more distinct than the other, which is inward ; scales 



