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On the Lepldoptera referred bij Walker to the (jenas Dioptis of 

 Hilhner ; hij Authur G. Butler, F.L.8.,F.Z.S. 



In the second vuluiue ut" his Catalogue of Leiiidnptcra 

 Heterocera, Walker ([uotes 32 species as belonging to the genus 

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

 he begins with a new form which he calls D. discretd. 



(ienus Erucua. Walh-i'r. 

 Group 1. Erocha. Wnlhur. 



Kiuh-liii dixcretd: 



nioptis (Eroc/ta) discrete, Walker, Cat. Lej). Hnt. 2, p. 311) 

 (1854). Kga{Bate.^). Type 15. M. 



This genus is referable to the Pijritlitcfi and is allied lo 

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

 with Vitessa and other Old A^"(u•ld genera. 



Genus Erbessa. W'dkcr. 

 Group 2. ERBESSA. W<dker. 



Erijessa sohria. 



Dioptis [Erhessa) sohrla, Walker, Cat. Lep. Het. 2, p. 319, n. 

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



This genus and the following are allied to Ii/ioshs of Walker, 

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

 clude Melduchroia davijjera and 31. a^rtmiriosa. 



Genus Pseuderbessa. Butler. 



Easily distinguished from tlie preceding by the neurati(»u of 

 secondaries, the second and third subcostal branches being 

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

 branches from a shoi't footstalk. In Erbessa, 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. mabrlfera. 



