10 ♦ Indian Musexm Notes. [Vol, IIL 



and pulvillij in the eyes descending' lower, and in having two short mar- 

 ginal macrochsetse on the second abdominal segment. 



Head with a silvery-white pulverulence ; front on the vertex as broad 

 as the eyes, but widening towards the antennae ; frontal band blackish, 

 narrower than the lateral portions of the front ; frontal bristles very 

 short, on each side of the band in two rows, which are very near to each 

 other, the outward row finishing at the root of the antennse, the inner 

 one descending to the end of the second antennal joint ; on the superior 

 part o£ the front are two pairs of somewhat stouter bristles, and on the 

 vertex a pair of still longer ones. Eyes bare. Face and cheeks broad, 

 without pilosity ; facial ridges nearly parallel, cushion-like; vibrissse at a 

 short distance above the oral margin, which is not at all prominent ; 

 above the vibrissse a short row of smaller bristles, and beneath them, 

 along the under side of the head, a series of similar bristles; inferior 

 portion of the cheeks scarcely one-third of the longitudinal diameter of 

 the eyes. Antennse inserted a little above the median line of the eyes; 

 basal joints short; second joint bristly on the upper part; third joint 

 three times as long as the second; arista thickened on the proximal half. 

 Proboscis black ; palpi rufous, cylindrical, slightly thicker towards the 

 end. Thorax cinereous, with four black stripes, of which the inner ones 

 are indistinct beyond the transverse suture; the two outer stripes short 

 and more spot like. Scutellum somewhat rufous, covered by a whitish 

 grey dust; besides the marginal macroehsetse, the scutellum has two 

 shorter discal ones. Abdomen ovate, cinereous ; the first segment, the 

 hind borders of the three following, and an indistinct dorsal stripe on 

 the second segment, are black; the black bind borders occupy about one- 

 fourth of the segments ; the second and third segments are longer than 

 the others, and have laterally a faint yellowish-red tinge. On the second 

 segment there are two very short marginal macroehsetae, on the third a 

 row of marginal macroehsetse, on the anal segment many hairs and bristles. 

 Legs black; under-side of the front femora with a row of bristles; 

 middle tibise with some long bristles halfway up their length ; hind tibisB 

 externally fringe-like with bristles ; tarsi shorter and thinner than the 

 tibise ; foot-claws and pulvilli short, the pulvilli yellowish. Tegulse 

 whitish. Wings nearly hyaline, slightly yellowish at the base; no costal 

 spine; small cross-vein nearly on the middle of the discal cell; apical cell 

 opened at a short distance before the wings tip ; curvation of the fourth 

 vein rectangular ; apical cross-vein slightly concave : posterior cross- vein 

 somewhat curved. 



This fly was bred from the social casemakJng caterpillar, Cosnodomus 

 hocMngii, Walsingham. 



I have some doubt about the sex of the specimen ; the absence of 

 orbital bristles on the front seems to indicate that it is a male ; the short 



