MATAPIN^. 191 



Isoteinon suhieslaceus, Moore, Proc. Zool. Soc. 1878, p. 844. Ehves and de Niceville, Journ. As. 



See. Bengal, 1886, p. 441. Watson, Hesp. Ind. p. 78 (1891) ; id. Jouni. Bo. Nat. Hist. Soc. 



1891, p. 57. 

 Arnetta suhtestacea, Watson, I.e. x. 1806, p. 680. 



Isoteinon khasianus, Moore, Proc. Zool. Soc. 1878, p. 693. Watson, Hesp. Ind. p. 78 (1891). 

 Arnetta khasiana, Swinhoe, Trans. Ent. Soc. 1893, p. 319. 



Wet-season Brood (Figs. 2, $, 2a, ?, 2b, ?). 



Imago. — Male. Upperside dark olive-brown. Forewing with six or seven 

 semi-hyaline spots ; a round spot at the end of the cell ; three small sub-apical spots 

 divided by the veins in an outwardly oblique curve ; two inwardly oblique in the 

 middle of the disc in the second and first median interspaces, and sometimes a smaller 

 spot immediately above the upper discal spot. Ilindwings without mai'kiugs. Cilia of 

 both wings brown at its base, checkered-brown and ochreous-grey at the tips. 

 Underside nearly as dark as it is above, covered with minute ochreous scales, densest 

 along the costa of forewing. Fureicing with the spots as on the upperside. Hindwing 

 with a minute white spot at the end of the cell, and a discal series of eight small white 

 dots, one or other of them absent in some examples. Antennae black above, whitish 

 beneath ; palpi, head and body above and below concolorous with the wings ; palpi 

 whitish on the underside. 



Female like the male, the white spots larger and more prominent, especially on 

 the underside of the hindwiug^. 



Expanse of wings, $ $ ly'y- inches. 



Dry-season Brood (Figs. 2c, $, 2d, ?, 2e, ?) = subtestaceus. 



Male and Female. Upperside like the wet-season form, the ground colour a shade 

 paler, and the spots of forewing usually a little larger. Underside, brownish-grey with 

 a pinkish tint. Forewing with the inner portion suffused with dark brown, the costal 

 and hinder margins narrowly and the outer margin broadly paler ; the spots as on the 

 upperside. Hindwing uniformly pale in colour, with very minute spots as in the 

 wet-season form, but usually very indistinct, and in many examples some of them are 

 indistinguishable. 



Expanse of wings, $ $ 1-f^ to 1^^ inches. 



Habitat. — Sikkim, Assam, Burma. 



Distribution. — The type is from Darjiling, the type of subtestaceus from 

 Tenasserim, and the type of khasianus from the Khasia Hills ; we have received a 

 good many examples of both forms from the Khasia Hills, and have specimens from 

 Rangoon, Maundrum and Sikkim ; Elwes records it also from the Karen and Naga 

 Hills ; Watson from Beeling and the Chin Hills. 



