PLASTINGIIN^. 237 



Imago. — Male. Upperside blackish-brown. Forerciiig with the semi-hyaline 

 spots disposed exactly as in P. murdava, but of a purer white colour ; more than the 

 basal half of the wing covered with whitish setse, the double spot inside the cell end 

 sometimes very indistinctly represented and sometimes absent. Ilindwing with the 

 whole interior space covered with whitish hairs, leaving the outer margin blackish- 

 brown, with the whitish hairs running into it, especially on the veins. Underside pale 

 ochreous-brown. Forewing with the hinder marginal space broadly whitish, its middle 

 portion extending upwards to the median vein, spots as on the upperside. Hindioing 

 much as in murdava. Antennse also as in murdava ; palpi, head and body above with 

 whitish hairs ; on the underside the palpi, pectus and abdomen are nearly pure white ; 

 the brown thorax and legs marked with white. 



Female like the male, but somewhat paler, the spots larger. 



Expanse of wings, $ % 1-/^ to 2y'o inches. 



Habitat. — Sikkim, Assam, Cachar, Bhutan, Burma, China, Malay Peninsula. 

 The types from Sikkim are in the Indian Museum, Calcutta. We possess Ijoth sexes 

 from Sikkim, and have received many examples from the Khasia Hills ; Wood-Mason 

 and de Niceville also record it from Cachar ; Elwes from ]\Iomeit and Ponsekai, Tavoy, 

 and the Naga Hills ; Adamson from Tenasserim, Bhamo and tiie Upper Chindvvin, all in 

 Burma ; Distant from the Malay Peninsula, and Leech from China. 



Genus PITHAURIOPSIS. 



Fiihauriopsis, Wood-Mason and de Niceville, Journ. As. Soc. Bengal, 1886, p. 387. Watson, 

 Hesp. Ind. p. 28 (1891) ; id. Journ. Bo. Nat. Hist. Soc. ix. 1895, p. 431, 



Pithauria, Watson (part), Proo. Zool. Soc. 1893, p. 119. Elwes and Edwards, Trans. Zool. Soc. 

 1897, p. 237. 



Foreicing, vein 12 ends on the costa liefore the end of the cell, venation as in 

 the genus Pithauria, but vein 3 is emitted a little farther from the lower end of the 

 cell, its base being consequently somewhat nearer to the base of vein 2 than it is in 

 that genus ; the sub-median vein is strongly sinuated in consequence of a prominent 

 bilobed glandular sexual mark in the male, extending downwards from the base of 

 vein 2, " consisting of two unequal slight depressions of the wing membrane, separated 

 from each other by the interuo-median fold, and converted by over-arching, stiff, 

 modified scales into pouches, which are fitted with a soft, fine and adhesive brown 

 woolly substance " ; * contour of the wing as in Pithauria. Ilindwing differs in venation 

 from Pithauria, vein 7 Ijeing strongly arched upwards from its base, the upper end of 

 the cell from the base of vein 7 being correspondingly strongly arched downwards 



* Wood-Mason and de Niceville's description of the glandular organ. 



