LIST OF DIPTERA. 761 



white bands ; its underside adorned on each side with a broad irre- 

 gular white stripe ; these two stripes send forth short bands, which 

 appear as spots on the sides of the back ; legs tawny, clothed with 

 black hairs and bristles ; feet black towards the tips ; claws tawny, 

 with black tips ; foot-cushions yellow : wings brownish gray, bright 

 tawny at the base : there is a white interval between the above co- 

 lours and for half the length of the wing along the fore border ; 

 wing-ribs and veins bright tawny, the latter pitchy in the gray part 

 of the wing ; tip cross-vein forming a hardly obtuse angle with the 

 fourth longitudinal vein, slightly curved inward near the base, 

 straight from thence to the tip, joining the border considerably above 

 the tip of the wing ; lower cross-vein with two irregular and very 

 slight curves, the lower inward, the other outward and indistinct ; 

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



a. Van Dieman's Land. Presented by the Rev. T. Ewing. 



b. New Holland. From the Rev. J. Wenham's collection. 



Tachina Cassotis, n. s. Fulva, capite Jiavo, abdomine ferrugineo 

 macula fasciaque nigris, palpis fulvis, antennis luteis, pedibus 

 fulvis, tarsis nigris, alis limpidis. 



Body clothed with black hairs and bristles : head yellow, beset 

 with a very few bristles, clothed beneath with a few pale yellow 

 hairs ; a single bristle on each side of the face ; epistoma promi- 

 nent ; eyes pitchy, not hairy : sucker black ; palpi tawny, beset with 

 black bristles : feelers pale orange, shorter than the face ; third joint 

 full thrice the length of the second; rather slender, flat above, 

 slightly convex beneath, rounded at the tip ; bristle pitchy, tawny 

 at the base ; first and second joints very short ; third joint stout at 

 the base, slender from thence to the tip, more than twice the length 

 of the third feeler-joint : chest tawny, dull ; breast paler : abdomen 

 ferruginous, a little longer than the chest ; a black stripe on the 

 back, disappearing at the base ; hind border of the third segment 

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

 tawny at the base ; foot-cushions tawny : wings colourless ; wing- 

 ribs tawny ; veins black, tawny towards the base ; tip cross-vein 

 forming a very obtuse angle with the fourth longitudinal vein, nearly 

 straight, joining the border a little above the tip of the wing ; lower 

 cross-vein with two distinct curves, the lower inward, the other 

 longer and outward ; scales pale yellow. Length of the body 2% 

 lines ; of the wings 5 lines. 

 a. Sierra Leone. Presented by the Rev. D. F. Morgan. 



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