ACHALARIN^. 265 



with a discal, well-rounded series of six well-separated black spots, decreasing in size 

 hindwards, one in each interspace, and a series of small black marginal spots, the black 

 inner spots of the underside visible through the wing. Underside white, all the 

 markings black. Forewing with the apical band as above, the two or three outer 

 marginal spots larger, the inner two-thirds of the cell and the space above is black, 

 and a black irregular patch outside the cell. Hindicing with the discal series of spots 

 larger, an additional large patch in the interno-median interspace, the marginal series 

 of spots much larger than they are on the upperside, and consequently much closer 

 together, a basal spot, with another below it, a large sub-basal spot on the costa and 

 another at the end of the cell. Antennae black ; palpi, frons, head and collar chestnut- 

 ochreous, third joint of palpi black ; body white, legs ochreous. 



Female. Upperside dark brown. Forewing with the outer third of the cell and 

 the space above it white ; two large white spots in an oblique line, below it, the lower 

 the larger. Hindwing with the discal series of spots of the male more or less 

 distinguishable. Underside brown, somewhat paler, with the spots as in the male, but 

 more or less obsolescent. 



Expanse of wings, $ ?, 2| inches. 



Habitat. — Assam, China. 



Distribution. — The type is doubtfully marked KE. Bengal. We have received 

 many males and one female from the Khasia Hills. Elwes and Doherty record it 

 from Margharita in Upper Assam, and Leech from China. 



Doherty says : * " No one who sees it floating lazily with level wings up and 

 down the bed of a stream, its pure white surface singularly conspicuous in the gloom 

 of the jungle, can doubt that the species is protected. The entire body and wings ot 

 this butterfly are saturated with a powerful and delicious odour of mingled vanilla and 

 heliotrope. This is often perceptible as it flies past. After pinching the insect, the 

 scent is sometimes obvious for hours afterwards on one's fingers. After lying two 

 weeks in its paper, a dried specimen still gave out perfume. None of the sweet- 

 smelling lepidoptera known to me, not even the Lethes, Euploeas, or CalliduLas, have 

 a more powerful odour. Yet it seems to have no specialised scent-organs (such as these 

 genera have) unless the tufts on the hind tibise, present in many other hesperians, be 

 so considered." 



Genus C API LA. 



Capila, Moore, Proc. Zool. Soc. 1865, p. 785. Watson, Hesp. Ind. p. 25 (1891) ; id. Proc. Zool. Soc. 

 1893, p. 30. de Niceville, Journ. Bo. Nat. Hist. Soc. vii. 1893, p. 347. Watson, id. ix. 1895, 

 p. 419. Elwes (part), Trans. Zool. Soc. 1897, p. 106. 



Forewing, vein 12 ends on costa opposite the upper end of cell, 11 emitted 



* Joum. As. Soc. Bengal, 1889, p. 133. 

 VOL. IX. 2 M 



