﻿NYMFHALINuE. {GmapPOTAMINA.) 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. Halitherses), and in 

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

 certain species of Limnaine and Bupl^eine butterflies. The males of this same species 

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

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

 Ghevana) 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 NymphalinjB. 



Key to the Indian Genera of the Potamina. 



A. First and second subcostal branches oi foi'eioing eraitted before end of the cell. 



a. Cell of forewing and hind wing open. 



a. Eyes naked Potamis. Mimathyma. Kohaka. 



Chitorta. Sestina. Herona. 



b. Eyes hai)-y Narsenga. Eulacura. 



B. First subcostal branch only oi foreioing emitted 6e/ore end of cell. 



a. Cell of forewing and hindicing open. 



a. Eyes naked ....... Dravira. Sephisa. Euripus. 



b. Eyes Jiairy Parhestina. 



b. Cell of forewing and hindwing 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). 

 Ai>aturia, Sodoffsk. BuU. Mosc. x. p. 81 (1837). 

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

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

 jEola (part), Billberg, Enum. Ins. p. 78 (1820). 



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

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



