476 TIPTTLIDjE. 



Auxiliary vein ending some distance beyond origin of 2nd vein: 

 2nd vein forked just before half, its length ; marginal cross-vein 

 joining the 1st to the 2nd vein, some distance before the forking 

 of the latter, and not much beyond the origin of the 3rd, the base 

 of which is short, the vein running parallel with the lower branch of 

 the 2nd vein ; anterior cross-vein moderately long ; 1st posterior 

 cell with parallel sides. "Discal cell absent ; lower branch of 

 4th vein forked early, the veinlets diverging rather widely ; the 

 5th, 6th, and 7th veins nearly straight, the latter rather widely 

 diverging from the 6th. Halteres yellow. 



Length 2-3 millim. 



Described from four males and four females in the Indian 

 Museum ; some taken at Darjiling, 7000 ft., 25-29. v. 10, by me in 

 grass on the hillside in shady places ; others taken at the same place, 

 6-8. viii. 09, by Mr. Paiva, and two females from Kurseong, 

 22-26. vi. 10 (Annandale), and one male from Darjiling, 3-9. vi. U9 

 (Howlett). 



Types in the Indian Museum. 



Genus MONGOMA, Westw. 

 Moni/oma, Westwood, Trans. Ent. Soc. Loud. 1881, p. 364. 



GENOTYPE, M. fragillima, "Westw. ; by original designation. 



Head rather small; proboscis short, palpi small and short, 

 4-jointed. Antenna? slender, 16-jointed, pubescent, reaching (if 

 bent backwards) just beyond the root of the wings ; scape with 

 the 1st joint elongate or oval, the 2nd very short, of about equal 

 width ; the flagellar joints elongate oval, approximately equal.* 

 Thorax oval, a little compressed anteriorly, neck short. Abdomen 

 elongate, slender, linear, sides approximately parallel in the male 

 and slightly broader beyond the middle in the female. Genitalia 

 small and inconspicuous. Legs extremely long and slender, three 

 or four times the length of the body ; front femora with two 

 small spiues above near the base projecting outwards ; tibiae with 

 apical spurs ; ungues acutely elongated, rather curved and a little 

 dilated near the base ; empodia absent. Wings with two sub- 

 marginal cells, four posterior cells, a discal cell, anal cell closed ; 

 anterior cross- vein absent. Auxiliary vein ending distinctly 

 beyond middle of wing ; the 1st longitudinal vein ending only 



* Westwood's description of the antennae runs " 1st joint broadly oval, 2nd 

 very short indeed, 3rd. 4th, and 5th about equal in length to the 1st and 

 thicker than the remainder, 6th and rest very slender and nearly equal." It 

 is, however, inadvisable to regard such minute differences as of generic value, 

 since the joints are found to show some degree of variation in many species in 

 this family. In my new species M. pallidiventris, the 2nd scapal joint is 

 nearly half as long as the 1st, in M. tenera all the flagellar joints are about 

 equal, except the first, which is slightly longer, a character present in many 

 species of TiPULin^;. 



