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Descriptions of new species of Heterocerous Lepidoptera 

 from Madagascar ; by Arthur G. Butler, F.L.S., P.Z.S. 



The following species have recently been added to the National 

 Collection, and were, with one exception, obtained by the Eev. 

 Deans Cowan, at Ankafana, Betsileo Country ; among other 

 forms collected by this gentleman were specimens of a Pergesa 

 nearly allied to P. huiiiilis (described as a Chcerocampa), and 

 Avhich I believe to represent the Chcerocampa hatschii, of 

 Keferstein ; it differs from P. humllis in its darker and mixch 

 redder coloration, the primaries show a distinct blackish shade, 

 extending from the end of the cell over the costal area, and 

 forming a large diffused cuneiform patch (this is very slightly 

 indicated in Keferstein's figure), the secondaries, excepting at 

 base and along the costal border, where they are whity-brown, 

 and at anal angle, where there is a diffused reddish patch, are 

 almost black ; the insect is also slightly smaller than Keferstein 

 represents it, but this may be due to our possessing the male. 



Specimens of Nephele charoba obtained by. Mr. Cowan, show 

 a remarkable variation from reddish clay colour to greyish 

 olivaceous in the colour of the primaries ; they also differ (as 

 N. morpheus from N. hesj^ej^a), in having a conspicuous, more or 

 less triangular, silver si>ot at the end of the cell. 



CHALCOSIIDJi. 



HYPSOiDES, n. gen. 



Form of the wings as in Hypsa ; costal vein of primaries 

 extending to about the external sixth of the costal margin ; 

 subcostal three-branched, its fii-st branch given off before the 

 end of the cell and not reaching the apex, the second and third 

 fi'om a long footstalk emitted at the superior angle of the cell 

 and at the same point with the upper radial, discoccllulars oblique 

 emitting the lower radial from their upper third ; second and 

 third median branches emitted from one point at the inferior 

 angle of the cell; secondaries with the costal and subcostal veins 



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CiSTULA EnTOMOLOGICA, 



6th October, 1882. 



