always broader. Ou the underside the purplish-brown gloss on 

 the hind wing is restricted to a small area near the middle of the 

 termen, the rest of the ground-colour of the wing is dull brown. 

 The catenulated transverse bands on both fore and hind wings are 

 however, more distinct. Antennae, head, thorax and abdomen 

 above and beneath in both sexes uniform dark brown. 



Exp. c? 2 34-38 mm. (1-36- 1-5"). 



Hab. Sikhim ; Chittagong Hill-tracts ; Assam ; Upper and 

 Lower Burma ; Teuasseriin ; extending to Java. 



605. Gerydus longeana, de Mceville, Join: Bomb. N. H. Soc. xii, 

 1898, p. 141, pi. Z, figs. 15, 16, J ?. 



J . Upperside, fore wing : area inside of a discal white fascia pale 

 brown ; discal fascia variable in breadth, curved, extended from 

 within apex of cell obliquely outwards to the middle of inter- 

 space 1, the veins traversing it brownish; rest of the wing uniform 

 dark brown. Hind wing : very pale brown, darker along the 

 costal margin. Underside : very pale brown, suffused with fer- 

 ruginous in the middle of the terminal areas in both fore and 

 hind wings. This rusty tint is very variable in different indi- 

 viduals and in some specimens on opposite wings of the same 

 individual. Markings generally very ill-defined and faint, but 

 the annular transverse broken bands similar to those on the 

 underside of the wings in G. boisducali medial white patch on 

 fore wing large, extended to the dorsal margin. Antennae, head, 

 thorax and abdomen pale brown ; beneath : the palpi, thorax and 

 abdomen slightly paler. $ . Some specimens exactly similar in 

 ground-colour and markings to the <5 ; others have the basal two- 

 thirds of the fore wing white, shaded with pale brown at the base 

 and with a similarly -coloured longitudinal streak that is broadest 

 in the middle, extended outwards from the base of the wing, but 

 not attaining the dark brown apical area, the tint of which is as 

 in the male. Hind wing : white, shaded with pale brown at 

 base and with darker brown along the costal margin. Underside : 

 much as in the d in both the dark and white forms. In the 

 latter the ground-colour on both fore and hind wings is more 

 ochraceous, and the annular markings and bands generally more 

 distinctly defined. Head, thorax and abdomen paler than in the d . 

 In the white form of the $ they are pale brownish white. 



Exp. d $ 36-41 mm. (1-43-1-62"). 



Nab. Upper Burma ; recorded so far only from the dry zone. 



In Ann. Mag. Nat. Hist. (5) xix, 1887, p. 266, Messrs. Distant 

 and Pryer described Gerydus petronius from Northern Borneo, 

 which the present form closely resembles, and with which it 

 is possibly identical. Personally, I am very doubtful whether 

 G. lonyeana is not merely a form of the common G. boisduvali, 

 Moore, from a very drv locality. The figures in the Journal of 

 the Bombay Natural History Society seem to me over-coloured. 

 I have seen no specimen with the rich red tinge on the termen of 

 the wings on the underside as shown in the plate. 



