( 228 ) 



iudividual and seasonal, is also the same. Bat in arja the white snbniargiiial spots 

 of the hindwinj,'- above are cm the whole larger, the bluish white scalinu: at the outer 

 edjre of the discal band of the hindwiug above is in the sjiriug form of (irjn more 

 extended than in the ennally wide-banded spring form of ff^/««jas, and the .Sikkimese 

 sj)ecimens of aijn caught in September and October have the discal baud rather 

 wider than the Sikkimese individuals of atliamas of the same months. E. aihamns 

 and arjd occur together, but the range of arja is verj- restricted, the insect being 

 found only from N. India to Tcnasserim. It is possible tliat we have to do only with 

 one, locally dichromatic, species. 



The distinguishing characters of the other four insects are as follows : — 



1. Eidepis athaiiuiK. — Discal band of forewiug above exactly as wide as below, 

 no white scaling at the outer side of the band : on hindwing the band above also as 

 wide as below, with indistinct bluish white lunules at the outer edge iu the palest 

 specimens; abdomen above olivaceous black, sides seldom greyish. 



2. EiiUpia jab/sus. — Resembling somewhat the specimens of E. athamas w-itli 

 very broad discal band ; wings broader, admarginal yellow spots of hindwing above 

 strongly marked, discal band of hindwing above with a bluish white border of about 

 1 to 2 mm. width ; tindrrside silvery, brownish red, postdiscal, luniform, spots of the 

 hindwing much larger than in the wide-banded ot/iamas specimens, all of nearly 

 the same size, the fourth only being shorter owing to veins 1{- and R^ being closer 

 together than the other veins, outer edge of discal band, taken as a whole, about 

 jiarallel to outer margin of wing, crossing R^ 8 to 11 mm. from origin of M'; white 

 submarginal spots fused with the white border of the admarginal spots to form a 

 wliite baud in which the black submarginal sjiots are situated. 



3. Eulepis moori. — Forewing ahorr with bluish white scaling at the outer edge 

 of the discal band, this scaling and the band concave between M- and SM-, partition 

 E.' — M' of band obliqnely sinuate, band of ? extending costad a little beyond R^. 

 Hindwing : discal band with bluish white (or white) scaling at outer side, at least 

 from R' to SM-, hence the white area of the upperside much wider than the discal 

 band of the underside, the outer edge of the latter showing through ; mostly the 

 black marginal area much wider in front than in middle ; admarginal spots often 

 partly fused with the white discal area, spots SC- — R^ heavier and clearer marked 

 than spots R^ — M-. On the luulersidf the median bar R^ — M' of the forewing often 

 situated (or partly) in cell ; postdiscal and submarginal, thin, bars, which form the 

 reniform postdisco-snbmarginal markings, more or less black, almost unicolorous ; 

 outer edge of discal band of hindwing crossing R^ at or beyond the bent of this 

 vein ; cell-bar of forewing abbreviated in front; abdomen white above. 



4. Eulepis hcljc. — Upperside \vith bluish white scaling at the outerside of the 

 discal band of both wings; edge of this scaling on forewiug either entire or bisiunate 

 between M- and SM-; admarginal spots SC^ — R^ of hindwing not obviously heavier 

 than the spots R' — M-. Underside : cell-bar of forewing reaching close to disco- 

 cellular spot, median bar R^ — M' never entering cell, discal baud of ? not crossing 

 R', postdisco-snbmarginal, reniform, spots obviously bieolorous, their jiroxiinal 

 borders being ferruginous; outer edge of discal band of hindwing crossing It' before 

 (seldom at) the bent of this vein; abdomen more or less white above. 



The differences between the four insects, as will be seen from the characters 

 mentioned above, are certainly not very considerable. If we consider them merely 

 (juantitatively, the differences are not greater than those between the spring and 

 summer forms of North Indian E. athamas, or amount scarcely to so much. It 



