DICRAXOMYIA. 369 



13. Femora with subapical black ring; 3rd 



longitudinal vein originating at a right 

 angle, not in a line with the anterior 



cross-vein ornutipes, sp. n., p. 380. 



Femora without subapical black ring ; 3rd 

 longitudinal vein originating in an acute 



angle, some distance before anterior [p. 380. 



cross-vein subfascipcnnis, sp. n., 



14. Thorax light yellowish grey, with three [p. 381. 



distinct dorsal black stripes cinerascens, sp. n., 



Thorax uniformly yellowish, or brownish 

 yellow, no distinct dorsal black stripes . . 15. 



15. Abdomen with conspicuous white bands [p. 382. 



on belly cinctoventris, sp. n., 



Abdomen without bands on belly 16. 



16 (a). Base of 4th vein, base of 2nd vein, and 



stigma infuscated ; species with dark 



brownish grey body and legs , . , sordida, sp. n., p. 382. 



(b). Base of 2nd vein and stigma and base 



of 3rd vein infuscated ; delicate thin 



yellow-legged species, with pale iridescent 



wings delicata, sp. n., p. 383. 



(c). Infuscation confined to the stigma, and 



there faint ; yellow, moderately robust 



species " fortis, sp. n., p. 385. 



(d). Practically no stigma, wings clear ; 



brownish yellow, moderately robust 



species ; auxiliary vein ending distinctly [p. 384. 



beyond origin of 2nd vein ; veins distinct, flavobnmnea, sp. n., 

 (e). Wings clear simplex, sp. n., p. 384. 



The above seems to be the best table that can be drawn up in 

 the present state of our knowledge, and must not be considered 

 as a final differentiation of species, still less as a guide to their 

 affinities. The order in which the descriptions are arranged is 

 intended to represent the affinities as nearly as can be judged at 

 present. It is highly probable that the total number of species 

 occurring in the Indian Empire is double or treble that at present 

 known. If the genus Thrypticomyia, Skuse, be admitted, the 

 species in the above table from kobusi to saltans, inclusive, will 

 come in it. 



257. Dicranomyia marmoripennis, sp. nov. (PI. VII, fig. 3.) 



cJ $ . Head dark grey, also proboscis ; palpi blackish ; antenna 

 all yellow. Thorax : dorsuin entirely bright brownish orange, in 

 which the outline of the usual three contiguous stripes and two 

 large post-sutural spots can be traced. In the female the colour 

 is much dai-ker brown, the outline of the stripes being much 

 fainter. Scutellum concolorous, or a little darker; metanotum 

 pale yellow with a very broad dark brown median stripe ; sides of 

 thorax pale yellow, the colour very sharply demarcated from that 

 of the dorsum, at a level just above the wing-base ; a wide, 



