448 



TIPULID.1\ 



then after turning more or less suddenly downwards towards tlie 

 hind margin of tlie wing, running approximately alongside of that 

 also, although the apical half of the 7th vein itself in such cases 

 is sinuate or bisinuate. 



Mesocyplwna differs mainly by the anterior branch of the 4th 

 longitudinal vein being forked instead of the posterior one, eo 

 that the discal cell, being absent as such, is coalescent with the 

 J3rd posterior cell. The 7th vein appears to be straight, the only 

 species other than my new one. Si. nir/ripes, with which 1 have 

 the means of comparison, being M. calo2Mra, Os. Sac, of which 

 Needham gives a figure.* 



Acyiihona and IIo2iMahis, not being Oriental, may be passed 

 over with the remark that the closing of the discal cell, fore- 

 .•-hortening the 2nd posterior cell, is the only generic character of 

 the former, whilst the appendix in the discal cell in addition to 

 the position of the posterior cross-vein (some distaiice before the 

 discal cell) are the characters of the latter. Of course, either or 

 both these forms, whether they are to be considered good gener;i 

 or not, may easily occur in the East. Acyphona occurs in Central 

 Europe, Hoplolahis in the United States. 



3Ioh2)hih(s is quite a good genus by virtue of the unusual origin 

 of the 3rd vein, coupled with tlie extension proximally of both 

 the 2ud posterior cell and the posterior cross-vein. 



lihypliolojilms is again easily separated from all tlie above 

 genera by the membrane of the wings being hairy in addition to 

 the veins. 



In Er'wptera, sensxi stricto, some variation of importance in the 

 course of the 7th vein is recorded above, and those species in 

 which this vein assumes its peculiar and unusual course may be 

 regarded as the typical ones of the genus in the East. In the 

 degree of pubescence of the veins, much difference is seen, some 

 species appearing at once as hairy-winged, whereas in others the 

 wings appear at first sight practically bare. 



Table of Species. 



1. Wing with distinct spots composed of 



small patches of black hairs pnnrfipennis, sp. n., p. 449. 



"Wing without such marks 2. 



2. Posterior cross-vein at some little 



distance before fork of 4th longi- 

 tudinal vein fernn/inea, sp. n., p. 4o0. 



Posterior cross-vein immediately before, 

 or actually at, fork of 4th vein •">. 



Posterior cross-vein half-way between 

 fork of 4tli longitudinal vein and fork 

 of its lower branch distaux, sp. n., p. 451, 



* Although teclniically M. v/ffripcn falls into Mcnoci/pl/oi/a, I cannot lielp 

 tliinking its affinities are not with M. calopiira and M. parva, Os. Sac, as its 

 general lacies seems quite different from that of these two species. 



