32 DUKHAM DIPTERA. 



90 (89). Otherwise than 89. 



91 (94). 0.5 1 and O.6 1 very small and indistinct. 



92 (93). Only one fronto-orbital bristle on each side, tibiae 



without the praeapical bristle. 



Lonch^eidje (XLIII.) 



93 (92). More than one fronto-orbital bristle on each side, the 



praeapical bristle present on at least some of the 

 tibiae. Sapromyzid^e (XLIV.) 



94 (91). 0.5 1 and O.6 1 fairly large and quite distinct. 



95 (96). Hind tibiae with a praeapical bristle. 



Sciomyzid^e, part (XXXVIII.) 



96 (95). Hind tibiae without the praeapical bristle. 



97 (98). Lower fronto-orbital bristles present and close to the 



eye. V.I .a. sharply bent up at its end (V. 34). 

 (Usually the wings are spotted or latticed, and the 

 females have the ovipositor protruding). 



TRYPETID2E (XLII.) 



98 (97). Lower fronto-orbital bristles absent. V.I, a. gently 



bent towards the costa. 



99 (104). Legs long, abdomen narrow and long, contracted at 



the base. 



100 (103). V.4. straight or nearly so. Shining black species. 



101 (102). V.6. reaching to the wing margin. Abdomen 



narrow, more than twice as long as the thorax. 



PsiLiDiE, part (XXXIX.) 



102 (101). V.6. not nearly reaching the margin. Abdomen 



rather broad and only slightly longer than the 

 thorax. SEPsmiE, part (XLVI.) 



103 (100). V.4. much bent towards V.3. Brown species. 



Calobata, Mg. (536) 



104 (99). Legs normal, abdomen comparatively short and 



broad, never contracted at the base. 



Ortalimi, part (XLI.) 



105 (76). V.I .a. absent or only rudimentary, and much 



thinner than V.l.b., which latter, as a rule, ends 

 before the middle of the fore margin, and often 

 very near the base. 



