448 TIPTJLIDJE. 



then after turning more or less suddenly downwards towards the^ 

 hind margin of the wing, running approximately alongside of that 

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

 is sinuate or bisinuate. 



Mesocyphona differs mainly by the anterior branch of the 4th 

 longitudinal vein being forked instead of the posterior one, so 

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

 .3rd posterior cell. The 7th vein appears to be straight, the only 

 species other than my new one, M. niyripes, with which 1 have 

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

 Needhain gives a figure.* 



Acyplwna and ffopMabis, not being Oriental, may be passed 

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

 shortening 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 distance 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. Acypliona occurs in Central 

 Europe, HopMabis in the United States. 



Molophihis is quite a good genus by virtue of the unusual origin 

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

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



Rliypholoplms is again easily separated from all the above 

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

 the veins. 



In Erioptera, sensu 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 jnmctipennis, sp. n., p. 449. 



"Wing without such marks 2. 



2. Posterior cross-vein at some little 



distance before fork of 4th longi- 

 tudinal vein ferruffinea, sp. n., p. 450. 



Posterior cross-vein immediately before, 

 or actually at, fork of 4th vein 3. 



Posterior cross-vein half-way between 

 fork of 4th longitudinal vein and fork 

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



* Although technically M. nigripes falls into Mesocyphmia, I cannot help 

 thinking its affinities are not with M. calo-ptera and M. parva, Os. Sac., as it 

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



