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On. the Lepidoptera referred by Wrdker in tJtn <ieiin.'< Dioptis of 

 Hiihmr ; ^^y Authur G. Butler, P\L.S.,F.Z.S. 



In the second volume of his Catalogue of Lepidoptera 

 Heterocera, Walker quotes 32 species as belonging to the genus 

 Dioptis ; these species lie groups under 13 sub-generic headings ; 

 he begins with a new form which lie calls I), discrcta. 



Genus Erocha. Wulh-i-r. 



Group 1. Kruoha. W'llkcr. 



Krarhn disrrcfa. 



Dlopti>! {Eniclia) di,srret<i. Walker, Gat. Lep. llet. 2, p. 319 

 (1854). Ega {Bates). Type B.M. 



This genus is referable to the Fijnilitex and is allied to 

 Walker's Genus Erilasa, it will form a group with that genus, 

 with Vitessa and other Old World genera. 



Genus Erbes.sa. ]\'<ilki'r. 



Group 2. ERBESSA. W<dL-i-r. 



Erhessa sohrin. 



Dioptis {Erhessa) sohria, Walker, Cat. Lep. Het. 2, p. 319, n 

 2 (1854). Para {Bates). Type B.M. 



This genus and the following are allied to Mhos us of Walker, 

 Lep. Het. 2, p. 359 ; the latter genus should be extended to in- 

 clude Melanchroia davii/era and M. a-nKji/iosa. 



Genus PsEUUERBEssA. Butler. 



Easily distinguished from the preceding by tlie neuration of 

 secondaries, the second and third subcostal branches being 

 emitted from a long footstalk, and the second and third median 

 branches from a short footstalk. In Erhessa, the subcostals are 

 emitted from a very short footstalk, the medians from the end 

 of the cell, at its junction with the lower discocellalar. Type 

 D. umbrlfera. 



