1883,] MR. A. G. BUTLER ON INDIAN LEPIDOPTERA. 151 



preceding, he says a few were taken in September only ; the females, 

 of which he sends four examples, he regards as representing the 

 T. hecabeoides of Menetries, of wliich he says he has never seen a 

 male ; he suggests therefore that T. heeabe is the male. Both sexes 

 of the two species, however, can readily be distinguished by a com- 

 parison of the under surface : in T. heeabe and T. hecabeoides the 

 irregular transverse brown subapical marking on the primaries is 

 invariably absent and the ordinary markings are somewhat badly 

 defined, whereas in T. cEsiojje, excavata, purreea, and their allies the 

 reverse is the case. 



22. Terias excavata. 



Terias excavata, Moore, P. Z. S. 1882, p. 252. 



S 2 • Assirghur, Suttara, Mhow, September to December 1881. 



" That these are males and females of one species I have not the 

 least doubt; they are plentiful here ; and I have carefully observed 

 them and have also ex<imined over two hundred specimens." " Very 

 common here in latter part of October and all November." — C. S. 



23. Terias purreea. 



Terias purreea, Moore, P. Z. S. 1882, p. 252. 



c? $ . Mhow, November and December 1881, January 1882. 



" Also males and females of one and the same species ; I have 

 examined 182 specimens ; they commence appearing here the latter 

 part of November, are very common all December, and a few 

 occasionally up to date." — C. S. 



The above notes upon two nearly allied species of the heeabe 

 group are very significant, proving the utter worthlessness of the 

 guesses which have been made of late regarding the variability of 

 species in this group. As is the case with many allied but admittedly 

 distincts pecies (as for instance Brenthis selene and B. euphrosyne), 

 Terias excavata and T. purreea evidently emerge from the pupa at a 

 distance of about a month from one another ; this interval of time 

 will not admit of the supposition that they may be seasonal forms 

 of the same species. 



24. Terias asphodelus, sp. n. (Plate XXIV. fig. 13.) 



Similar to T. irregularis (P. Z. S. 1882, pi. xii. fig. 3), but con- 

 stantly considerably smaller ; the margin of the secondaries dotted 

 with black : below very similar to T. fimbriata, the spots at the 

 extremities of the discoidal cells large, reddish with greyish centres ; 

 primaries with a well-developed transverse subapical red-brown 

 irregular streak. Expanse of wings, cJ 34 mm., $ 40 mm. 



Mhow and Depalpur, December 1881 to February 1882. 



Var. narcissus. 



Smaller than the type ; the border of primaries forming a regular 

 decreasing arched band to the external angle, without a trace of the 

 bisinuation on the median interspaces. Expanse of wings 32 mm. 



Mhow, February 1882. 

 Proc. Zool. Soc— 1883, No. XI. ] 1 



