NYMPHALIN^. {Gmxvp fotamina.) 3- 



India, chiefly owing to their habit of frequenting moist places " (de Niceville, I.e. ii. 

 49). 



Polymorphism and Mimicry. — In the genus Euripus {i.e. E. Hahtherses), and in 

 Sephisa (i.e. S. Chandra) the females are polymorphic, as well as being mimics of 

 certain species of Limnaine and Buplgeine butterflies. The males of this same species 

 of Euripus, and both the sexes of Hestina (H. nama) and of Parhestina (P.persimilis) 

 also mimic certain species of Limnaine butterflies. Both sexes of Mimathyma (if. 

 Chevana) are, on the upperside of the wings, a remarkable mimic of certain white- 

 spotted-and-banded species of Athyma. In Rohana {B. Parisatis) the males of which 

 are deep black above, the females are yellowish-ferruginous and generally resemble 

 the species of the genus Ergolis — which they doubtless mimic. Herona is stated by 

 Mr. de Niceville (Journ. Bombay N.H.S. 1894, 6) to probably mimic certain species 

 of Felderia, a genus of the Euthaliine group of Nymphalinre. 



Key to the Indian Genera op the Potamina. 



A. First and second subcostal branches oi fm-eiving emitted before end of the cell. 



a. Cell of forewing and liindioing o^en. 



a. Eyes naked Potamis. Mimathyma. Eohana. 



Chitoria. Hestina. Heeona. 



b. Eyes haii-y Naesenga. Eulacura. 



B. First subcostal branch only oi forewing emitted before end of cell. 



a. Cell oi forewing and hindioing open, 



a. Eyes naked ....... Deavira. Sephisa. Euripus. 



6. Eyes hairy Parhestina. 



b. Cell of forewing and hindiving closed. 



a. Eyes hairy ....... Dilipa. 



Genus POTAMIS. 



Potamis, Hiibner, Tentamen, p. i. (1806). Scudder, Proc. Amer. A. and Sc. Boston, 1875, p. 256. 



Apatura (part), Fabricius, lUiger's Mag. vi. p. 280 (1807). 



Apatura, Leach, Edinb. Encyclop. p. 718 (1815). Ocbsenheimer, Schmett. Eur. iii. p. 19 (1816). 



Samouelle, Ent. U. Comp. p. 239 (1819). Curtis, Brit. Ent. pi. 338 (1831). Duponchel, Pap. 



Fr. Suppl. p. 402 (1832). Westwood, Gen. D. Lep. p. 302 (1850). Kirby, Syn. Catal. D.Lep. 



p. 259 (1871). Crotch, Cistula Ent. i. p. 66 (1872). de Niceville, Butt, of India, etc., ii. 



p. 48 (1886). Staudinger and Schatts, Lep. Exot. p. 165 (1888). Leech, Lep. China, etc., p. 153 



(1892). 

 Apaturia, SodofFsk. Bull. Mosc. x. p. 81 (1837). 

 Apatura (sect. 1), Felder, Neues Lep. p. 36 (1861). 

 Doxocopa (part), Hiibner, Verz. bek. Schmett, p. 49 (1816). 

 ^ola (part), Billberg, Enum. Ins. p. 78 (1820). 



Imago. — Male. Forewing triangular, rather short and broad ; costa very 

 slightly arched, apex obtuse, exterior margin very slightly scalloped, posterior margin 



B 2 



