314 Records of the Indian Museum. [Vol. XV, 



subequal in length, 3rd slightly shorter. A blackish suffusion extending 

 over tip of 1st vein and marginal cross vein. Tip of wing a little black- 

 ish suffused, the colour extending inwards for less than half way to the 

 discal cell. Veins distinctly black except as follows : proximal half of 

 basal section of 2nd vein, its 2nd section, upper branch and basal half 

 of lower branch ; tip of 5th vein, apical half of 6th vein, and all veins 

 at extreme base of wing yellowish. Halteres yellow. 



Described from two $ $ from above Tura, Garo Hills, 3,900 ft., 

 viii-l7 {Kemp). In Indian Museum. A very handsome species. 



Mongoma flava, sp. no v. 



9. Assam. Long. 5 mm. to tip of ovipositor. 



Body all pale brow^nish-yellow ; flagellar joints not so distinct as in 

 the other species. Legs yellow, extreme tips of femora black. 



Wings yellowish, veins yellow. Costal and subcostal cells a little 

 deeper yellow. 2nd vein forking at marginal cross vein ; 2nd and 4th 

 posterior cells of equal length, longer than 3rd ; posterior cross vein 

 fractionally before base of discal cell. Halteres yellow. 



Described from a unique $ in the Indian Museum from above Tura, 

 Garo Hills, 3,500-3,900 ft., viii-17 {Kemp). The wholly yellow colour 

 of this species distinguishes it from all others. 



PLESIOMONGOMA, gen. nov. 



Differing from Mongoma only in the 2nd longitudinal vein not being 

 forked. Type-species : P. venosa, sp. nov. 



Plesiomongoma venosa, sp. nov. 

 9. Shillong. Long. 9 mm. 



Head and appendages (except eyes) wholly yellowish ; occiput 

 slightly brownish. Thorax wholly yellowish, a little darker towards 

 sides of dorsum ; pleurae paler. 



Abdomen dark brown, hind margins of segments blackish ; base of 

 abdomen dirty yellow ; belly and ovipositor yellowish. 



Legs (hind pair missing) wholly bright yellow to tips ; anterior 

 femora with moderately broad black ring at tip. 



Wings pale grey. Costal cell distinctly though not deeply, yellow. 

 All the veins deep black and very distinct ; transverse veins very narrow- 

 ly suffused, as is also base of 2nd longitudinal vein and the whole wing 

 tip somewhat narrowly. Halteres yellow, with dirty black knobs. 



Described from a unique $ in the Indian Museum from Shillong, 

 5,500 — ^6,400 ft., 29-viii — 5-ix-15 {Kemp), in perfect condition except for 

 the missing hind legs. A very distinct species by the prominence of 

 the veins as well as the difference in venation from Mongoma. 



PARAMONGOMA, Brun. 



Enderlein's Mongomella [Zool. Jahr. XXXII, p. 61, 1912) is an abso- 

 lute synonym of my genus. Albitarsis, Dol. still remains the only 

 oriental species. 



