DICRAXOMYIA. 3G9 



13. Femora with subapical black ring; 3rd 



long-itiidinal vein originating- at a right 

 angle, not in a line with the anterior 



cross-vein ornatipes, sp. u., p. 380. 



Femora without subapical black ring ; 3rd 

 longitudinal vein originating in an acute 



angle, some distance before anterior [p. 380. 



cross-vein t<uhfttscipennis. sp. n., 



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



distinct dorsal black stripes ciiierascens, sp. n., 



Thorax uniformly yellowish, or brownish 

 yellow, no distinct dorsal black stripes . . 1-"). 



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



on belly cinctoventris, sp. n., 



Abdomen without bands on belly IG. 



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. 



(h). 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. 



(o). Infuscation confined to the stigma, and 



there faint ; yellow, moderately robust 



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



(«?). Practically no stigma, wings clear ; 



brownish yellow, moderately robust 



species ; auxiliary vein ending distinctly [p. 384. 



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

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



The above seems to be the best table that cau 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 wliich* 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 

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

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

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

 come in it. 



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



cJ 5 . Head dark grey, also proboscis ; palpi blackisli ; antennae 

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

 which the outline of the usual three contiguous stripes aud two 

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

 is much darker brown, the outline of the stripes being much 

 fainter. Scutellum concolorous, or a little darker; metanotum 

 pale yeUow 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. 



