8 LEPIDOPTERA INDICA. 



1885, p. 211. Leech, Butt, of China, etc., p. 158, pi. xv., fig. 3, c? (1892). Habitat. 

 W. China. 



Genus MIMATHYMA. 



Imago. — Male. Forewing more elongated and subtriangular than in typical 

 Potamis (Iris), costal margin more convex, apex more obtuse; the costal vein much 

 more convex from the base, the cell area broader and shorter. Hincliving 

 comparatively longer, and not produced posteriorly ; the apex and exterior margin 

 being conspicuously convex ; upper end of the cell area shorter. Antennae more 

 slender, and with a longer and narrower club ; eyes naked. Sexes alike. 



Type. M. Chevana. 



The species of this genus are admirable mimics, on the upperside of both the 

 wings, of the common white-spotted and banded Athymas. 



MIMATHYMA CHEVANA (Plate 192, fig. 1, la, S)- 



Athyma Chevana, Moore, Proc. Zool. See. 1865, p. 763, pi. 41, fig. 1, ^ . 



Apatura Chevana, de MceviUe, Butt, of India, etc., ii, p. 52 (1886). Staudinger, Lep. Exot. pi. 55, $ 

 (1885). 



Imago. — Male. Upperside olivescenfc brownish -black, with pale yellowish-white 

 markings, glossed with reflected purple in freshly captured specimens. Forewing 

 with a pale yellowish- white elongated streak extending from the base along the lower 

 half of the cell, and there joining the lower of the two obliquely disposed upper 

 discal spots ; beyond is an outer discal, transverse, excurved series of spots, of 

 which the two upper are oval, the next two much smaller and conical, and the three 

 lower largest, followed by a submarginal recurved row of small spots, and then by a 

 lower marginal row of much smaller lunate spots. Hindtving with a broad pale 

 yellowish-white transverse subbasal band, a submarginal recurved row of broad 

 dento-lunate spots, followed by a very obscurely-defined marginal slender lunular 

 line ; abdominal margin greyish. Underside. Forewing with the markings as on the 

 upperside, dull white ; the discal interspaces and extreme outer margin brownish- 

 ochreoiis, the lower discal interspaces also slightly clouded with black, there being 

 also two small blackish superposed-dots in middle of the cell, and a short streak at 

 its end ; the base of the costa and a triangular subapical patch being glossy nacreous 

 bluish-white. Sindtving glossy nacreous bluish-white, the area of the two transverse 

 bands, disposed as on upperside, whiter ; also crossed by an outer discal slightly 

 incurved narrow sinuous-edged bright ochreous band, which is joined at both ends to 

 a similar marginal band of the same colour, thus encompassing the nacreous submar- 



