90 Memoirs of the Indian Museum, 



pair smaller than the others ; no oc. or very weak ; arista 

 plumose; body dark yellow or brownish, with black bands on 

 the abdomen ; wings with hyaline spots and indentations. 



20 (21). Eyes very narrow ; face convex 



21 (20). Eyes of usual size, rounded ; face concave 



22 (19). Scutellum with four bristles only. 



23 (24). A distinct pp. ; four posterior femora spinulose beneath ; middle 



tibiae with two spurs ; abdomen narrowed at the base, almost 

 pedunculate; no oc; arista shortly plumose ; body tawny, 

 with yellow and black markings; wings with cross bands 

 and broad apical spot 



24 (23). No distinct pp.; femora not spinulose beneath; abdomen not 



pedunculate ; middle tibiae with a single spur. 



25 (32). Arista long plumose. 



26 (27). Oc. very little developed, weak and short; third antennal joint 



rounded at the tip ; small cross vein placed after the middle 

 of the discal cell; body brown or yellowish, with black mark- 

 ings; wings with brown or yellowish rivulet- pattern, without 

 basal black streaks 



27 (26). Oc. very strongly developed, strong and long. 



28 (29). Third antennal joint rounded at the tip; body yellowish ferru- 



ginous, with black longitudinal stripes on thorax and black 

 cross-bands on abdomen; wings with four brownish cross- 

 bands, the externals fused together at fore border 



29 (28). Third antennal joint pointed at end. 



30 (31). Small cross-vein placed on or before the middle of the discal cell ; 



scutellum swollen, with shining black spots; wing-pattern 

 as in Ceratitis, with basal black streaks; body short, yellow . . 



31 (30). Small cross vein after the middle; scutellum not swollen, yellow 



with black markings; body elongate, black; wings with 

 hyaline spots and indentations, without basal black streaks, 

 but with triangular black spots in the hyaline indentations of 

 the hind margin 



32 (25). Arista shortly plumose or merely pubescent. 



33 (34). Small cross-vein a little before the middle of the discal cell; 



hind cross- vein very oblique; frons flattened, in the male 

 with peculiar bristles; arista pubescent only on the upper 

 side; body black-spotted; wings with yellowish bands and 

 black streaks towards the base 



34 (33). Small cross- vein more or less after the middle ; hind cross-vein 



not obhque ; arista shortly pilose or pubescent on both sides ; 

 wings without basal black streaks. 



35 (36)- Face retreating inferiorly; frons of the male with horn-like pro- 



cessss or with very incrassated and rigid bristles 



36 (35). Face not retreating ; frons of the male without such bristles 



37 (6). Third longitudinal vein wholly bare, or with few bristles at the 



base only. 



38 (39). Scutellum with two bristles only ; oc. strong ; arista pubescent; 



small cross- vein after the middle of the discal cell; body 

 black ; wings with hyaline spots and indentations 



[Vol. Ill, 



Diarrhegma, n. gen. 

 Rioxa, Walker. 



Callistomyia, n. gen. 



Ga'itrozona, n. gen. 



Taeniostola, n. £ 



Stidaspis, n. gen. 



Phaeospila, n. gen. 



Ceratitis, Mac Leay. 



Vidalia, R. D. 

 Acidia, R. D. 



