GONOMYIA. 473 



moderately pubescent. Thorax : dors urn dark brownish grey, the 

 colour almost taking the form of: three longitudinal contiguous 

 stripes ; mesonotal suture pale yellowish, as is also the longi- 

 tudinal depression on the post-sutural part of the dorsum ; side 

 margins below the level of the dors urn pale yellowish white, but 

 not so distinctly continued round in front as in G . flavomarginata ; 

 sides of thorax yellowish, especially posteriorly, microscopically 

 dusted with bluish-black. Scutellum bright lemon-yellow, with a 

 small dusky triangle at base. Abdomen d&rk brown, emarginauons 

 of segments moderately distinct, with pale hairs, which are 

 more conspicuous at the sides ; belly more yellowish ; ovipositor 

 yellowish. Legs brownish yellow, coxa? and base of femora paler. 

 Wings clear, moderately glabrous. Auxiliary vein ending a little 

 further beyond the origin of the 2nd longitudinal vein than in 

 the previous two species ; 2nd vein forked, the upper branch 

 bisinuate, the lower one nearly straight ; base of 3rd vein (placed 

 at the angle of the 2nd) almost punctiform, running straight to 

 immediately above the wing-tip and almost parallel with the 

 upper branch of the 4th ; the 1st posterior cell being, however, 

 distinctly though not greatly wider at the base than at the tip ; 

 anterior cross-vein straight, shorter than in the two previous 

 species ; discal cell pentagonal, the three veinlets straight, the 

 outer ones diverging. Stigma distinctly present, pale blackish, 

 elongated, but without sharp delineation. Halteres pale dirty 

 yellow. 



Length 2|-3| milliin. 



Described from one male and several females in the Indian 

 Museum; type male from Kurseong, 13-16. vii. 07, type female 

 from Darjiling, 5. viii. 09 (Paiva) other females from Darjiling, 

 9. viii. 09 (Jenkins], Kurseong, 25-28. iii. 10, on window, 5-7. vii. 08, 

 and 22. vi. 10 (all Annandale). 



The last specimen mentioned has the posterior cross-vein near 

 the middle of the discal cell. 



340. Gonomyia aperta, sp. nov. (PL IX, fig. 8.) 



c? . Head mainly yellowish, neck dark. Proboscis and palpi 

 blackish ; autennal scape yellowish ; flagellum blackish, with pale 

 pubescence. Thorax: doraum and dorsum of scutellum medium 

 grey with a slight brownish tinge, lighter along the sutures ; sides 

 in front of wing whitish grey, posteriorly yellowish, with a trace 

 of whitish dust; sternopleurse brownish. Edge of scutellum and 

 the metanotum yellowish. Abdomen yellowish, a little black at 

 base and tip. Genitalia conspicuous, brownish yellow, consisting 

 apparently of a pair of large claspers, a ventral elongated piece 

 and two pairs of filamentous appendages, the upper ones being 

 much the shorter. Leys yellowish, darker towards the tips. 

 Wings pale yellowish grey, nearly clear, distinctly glabrous. 

 Stigma distinct but ill-defined, pale blackish. Auxiliary vein ending 

 at the origin of the 2nd longitudinal ; lower branch of fork of 



