LIST OF DIPTERA. 701 



tip, extremely convex near the base above, whence it rises abruptly, 

 but declines more gradually to the tip ; its height is equal to full 

 two-thirds of its length ; the orifice is very distinct, and is seated 

 near the underside below the greatest height of the third joint ; 

 bristle downy, tapering gradually from the base to the tip, less than 

 twice the length of the third joint, its second joint long, more than 

 twice the length of its first : scutcheon armed with black spines, 

 which, like those of the abdomen, are shining and polished : legs 

 black, clothed with hoary hairs, and beset with black spines ; feet 

 ivory-white, clothed with short white hairs ; a small pitchy band at 

 the tip of each foot ; foot-cushions and claws white ; tips of the 

 claws black : wings deep black, with some dark gray streaks towards 

 the base; wing-ribs, veins, and scales black; tip cross-vein forming 

 an acute angle with the fourth longitudinal vein, which hardly pro- 

 jects beyond it, much curved inward near the base, straight from 

 thence to the tip, which joins the border at some distance above the 

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

 where it slightly curves outward. Length of the body 8 lines ; of 

 the wings 20 lines. 

 a. Venezuela. From Mr. Dyson's collection. 



Group II. Dejeania, Desv. Essai. Myod. 33. 



Tachina bombylans, Wied. Auss. Ziceif. ii. 286, 10. Stomoxys 



bombylans, Fabr. Ent. Syst. SuppL Syst. And. 281, 6. Coq. 



III. Icon. Ins. 115, pi 25, /. 16. Dejeania capensis, Desv. 



Essai. Myod. 34, 2. D. bombylans, Macq. Dipt. Exot. ii. 3, 



34, 1, pL'S, f. 2. 

 cu Cape. Presented by the Entomological Club. 

 b. South Africa. Presented by Dr. A. Smith. 



Group III. 



Third joint of the feelers very much longer than the second ; 

 convex above, slightly convex beneath, rounded at the tip ; second 

 joint of the bristle much longer than the first. 



Tachina alterna, n. s. Nigra, capite abdomineque flavis, abdominis 

 apice nigro fasciis vittaque ferrugineis, antennis pedibusque 

 nigris, alisfuscis. 



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

 yellow, blackish on the crown, clothed beneath with pale yellow 



PART IV. 3 Q 



