﻿NYMPHALINJE. (Group POTAMINA.) 17 



exterior margin slightly uneven and angular below the apex ; first subcostal veinlet 

 emitted at one-fourth before end of the cell, the second being emitted either at the 

 end or at a little distance beyond the end. Sometimes, but very rarely, the second 

 is emitted immediately before the end of the cell,* third at two-fifths from the cell, 

 fourth and fifth at four-fifths ; discocellulars short, angfed close to subcostal, radials 

 from upper angle and lower end ; cell short, broad, open ; lower median emitted 

 from opposite discocellulars, the two upper medians at equal distance beyond ; sub- 

 median straight. Eindwing very short, triangular, prolonged posteriorly, exterior 

 margin slightly uneven ; costal vein much arched ; precostal vein short and abruptly 

 bent outward ; subcostals and radial contiguous at their base but well divergent ; 

 cell open. Body stout ; palpi porrect, tip pointed, squamose beneath ; antennae 

 slender; eyes naked. Sexes dissimilar. 



Caterpillar. — Slug-shaped, long, slender, smooth ; head small and surmounted 

 by two long spined-processes projecting in front ; anal segment with two shorter 

 naked pointed processes. 



Chrysalis. — Compressed ; with a high pointed dorsal prominence on basal 

 segment of abdomen, from which a sharp ridge extends to the tail, a lesser pointed 

 prominence on middle of thorax ; head with two short points in front. 



Type. — R. Parisatis, 



Mimicry. — The males on the upperside of both wings of B. Parisatis and Gamiha 

 are uniformly deep purplish-black, but the females are yellowish-ferruginous, and 

 generally resemble species of the genus Ergolis, of the Group Eurytelina. 



EOHANA PARISATIS (Plate 194, fig. 2, 2a, b, c, c? ? ). 



Apatura Parisatis, Westwood, Gen. D. Lep. ii. p. 305 (1850). Moore, Catal. Lep. Mus. E. I. Company, 

 i. p. 202 (1857). de NiceviUe, Butt, of India, etc., ii. p. 54, pi. xx., fig 92, ^ $ (1886). 

 Staudiuger, Lep. Exot. pi. 55, S ? (1885). 



Rohana Parisatis, Moore, Lep. of Ceylon, i. p. 27 (1880). 



Imago. — Male. Upperside. Both wings uniformly purplish-black. Cilia 

 alternated with white. Foretving with a minute white costal dot before the apex. 

 Hindtving without markings. Underside dark purplish ferruginous-brown, the 

 basal area brighter ferruginous-red, the discal area longitudinally clouded with black 

 and with a slightly-defined ocellate spot on the lower median interspace ; two small 

 black rings in each cell, and an auriform mark at end of each cell. Both wings 



* In thirty males of iZ. Parisatis under examination, sixteen had the second tnlcostal emitted beyond 

 end of the cell, twelve at the end, and two only hefore the end. Mr. \V. Doherty (J. A. S. Bengal, 1886, 123) 

 says that " this genus is allied to Precis" and arranges it near that genus and Juuonia. It has, however, 

 no affinity with either of those genera, nor with the group iu which they occur. 



VOL. III. D 



