DICRANOMYIA. 385 



Genitalia concolorous, apparently normal. Legs : coxae and some 

 part of the femora towards the base pale dirty yellow; the 

 remainder obscurely brown. Wings grey. The auxiliary vein 

 ending a little beyond the origin of the 2nd longitudinal vein ; 

 the marginal cross-vein a little beyond the anterior cross-vein ; 

 discal cell almost square, nearly as long as 2nd and 3rd posterior 

 cells ; posterior cross-vein just before inner end of discal cell. 

 Halteres pale dirty yellow. 



Length 5 millm. 



Described from one female from Calcutta, 6. xi. 10 (F. H. 

 Gravely). 



Type in the Indian Museum. 



276. Dicranomyia fortis, sp. nov/ 



<3 . Head dark grey ; frons very wide, two-thirds the width of 

 the head at the vertex, narrowing above the antenna to half this 

 width ; eyes contiguous below for a short space. Proboscis dark 

 brown, palpi blackish. Antennae brownish yellow. Thorax : 

 scutellum, rnetanoturn and sides of thorax uniformly bright pale 

 brownish yellow, shining ; neck a little blackish above. Abdomen 

 brown or brownish yellow, a little lighter on the belly. The 7th 

 and 8th abdominal segments widened. Genitalia peculiarly con- 

 structed ; a long upper somewhat convex plate, appearing almost 

 as an additional narrow abdominal segment, bearing some strong 

 yellow bristly hairs, tapering to a blunt point, brownish yellow in 

 colour ; below this a pair of elongated claspers as long as the 

 upper plate ; the elongate-conical 1st joint blackish, shining ; the 

 2nd joint forming a reddish yellow chitinous blade, without 

 terminal hooks or claws ; apparently no ventral plate. Legs 

 yellowish, femora more or less dark brown or black at tips, often 

 indistinctly so ; tips of tarsi blackish. Wings pale yellowish grey, 

 considerably iridescent. Venation as in D. fraterna, except that 

 the praefurca is nearly half the length of the 2nd longitudinal vein. 

 Stigma pale blackish, sometimes barely perceptible. Halteres 

 yellow, clubs blackish. 



Length 4|-5| millim. 



Described from six males in the Indian Museum, five of them 

 (including the type, 6. viii. 09) taken by Mr. Paiva, 6-9. viii. 09, 

 at Darjiling, the others taken at the same place by me, 9. viii. 09. 



The peculiar construction of the genitalia ought to make this 

 species tolerably easy of recognition. 



277. Dicranomyia nigrithorax, sp. nov. 



c? . Head : eyes wide apart, the frons in one example (in the 

 other the eyes are accidentally compressed) occupying more than 

 half the width of the head ; vertex grey, frons whitish with silver 

 reflections. Antennae 15-jointed; scape dark brown, 1st joint 



