EDWARDS— DIPTERA, TIPULIDtE 211 



Length of body 1'6 mm. 

 „ wing 2 '3 mm. 

 „ hind leg 6 "5 mm. 



This species seems to be intermediate between Erlo'ptera (sensu stricto) and Molo- 

 philus. At first T was inclined to place it in one of these genera, and ascertained that it 

 had not been described under either. But although it differs from Tasiocera in the 

 antennal characters, which Skuse seems to regard as some of the most important diagnostic 

 characters of that genus, yet it agrees very well in several important points, namely, the 

 complete absence of the subcostal cross- vein ; the short seventh longitudinal, which reaches 

 only to ^ of the wing ; the position of the great cross-vein ; the termination of the 

 pr^furca in the second submarginal cell ; and finally the dense hairiness and the great 

 length of the hair on the abdomen, wings and antennse. The cross-veins, as in the 

 Austrahan species, are very difficult to make out, even with the wing denuded of hair and 

 mounted in balsam. They seem, however, to be rather variable, as pointed out in the 

 description. Whether the prsefurca ends in the first or second submarginal cell is difficult 

 to see without mounting the wing ; in the specimen mounted (the one figured) it ended in 

 the second, but in other specimens I think it ends in the first. 



Loc. Seychelles. Mah(5 : Morne Blanc, 1^; Cascade Estate, 800— 1500 ft., 2$; 

 top of Mount Sebert, 1800 ft., 1 $. 



Genus MoNGOMA Westwood, Trans. Ent. Soc. London, 1881, p. 364. 



23. Mongoma pennipes Osten-Sacken, Bei-lin. Ent. Zeitschr., xxxi. 204 (1887). 



Dr K. Griinberg kindly confirmed my identification by comparing a specimen with the 

 type in the Berlin Museum. The species may readily be recognised by its four posterior 

 cells and by its white tarsi and white-tipped tibia;, the middle tibiiB being fringed on both 

 sides at the tip with white hairs. 



Previously (Ann. Mag. Nat. Hist., ser. 8, viii. 1911, p. 63) I have considered that 

 Monyoma should be regarded as a subgenus of Trentepohlia, this latter being an older 

 name. Brunetti, however (Rec. Ind. Mus., vi. 1911, pp. 290—297), prefers to recognise 

 three allied genera forming the Mongoma grouj), and as these three do not apparently 

 intergrade it may be as well to follow him in this. His Mongomiuide.-t, however, is only 

 a synonym of Trentepohlia Bigot (Ann. Soc. Ent. France, ser. 3, ii. p. 473, 1854), since 

 Limnohia trentepohlii Wied. is the type in each. Even if the original characterisation 

 were insufficient, as Brunetti claims, the writer's limitation of the subgenus Trentepoklia 

 (prior to the publication of Mongomioides) would give the name a proper .standing. 



Meijere, on the authority of Jacobson, .states that this species, like Dicranomyia 

 {Thri/pticomyia) saltans, forms chains on web-threads. Similar habits have been observed 

 by Scott in TI t ri/pti corny ia scycheUensis, and it is interesting to notice that all three 

 species have white tarsi. It is strange that the same habit should have been developed 

 independently in two very different genera. 



Loc. Seychelles. Mahe : Cascade Estate, 800 ft. and over. 10 <?. 4 ?. Also Borneo, 

 I $ (in Berlin Museum): Ceylon; Pundaluoya VL 1889, 2 ? (E. E. Green); hot wells at 

 Trinconiali XT. 1891, 2 ? (Col. Yerbury) : Semarang ; Jan. and Oct. (E. Jacolwon). 



