190 NYMPHALIDJE. 



Key to the forms of Thaumantis. 



Fore wing on upperside suffused with brilliant 



blue, except on a narrow terminal and on 



broader dorsal margin T. lucipor, p. 190. 



Fore wing on upperside with a broad blue diseal 



bar, basal half of wing uniform brown T. diores, p. 190. 



223. Thaumantis diores (PL IV, fig. 32), Westw. A. M. N. H. xv, 



1845, p. 234 ; M. # de N. Butt. Ind. i, 1883, p. 304 ; Moore (Nan- 

 dogea), Lep. Ind. ii, 1893-96, p. 182, pi. 148, figs. 1, 1 a-\ £, tf £ . 

 Thaumantis ramde, Moore, Cat. Lep. Mus. E. I. C. i, 1857, p. 21.5 ; 

 M. # de N. Butt. Ind. i, 1883, p. 305. 



S $ • Upperside dusky brown ; fore wing with a broad 

 beautifully iridescent blue diseal band from below vein 8 to 

 dorsum, extending posteriorly towards the base of the wing, out- 

 wardly suffused with a brilliant silvery gloss. Hind wing with a 

 median, similar, somewhat rounded patch, the outward silvery 

 gloss very brilliant, in fresh specimens the blue spreading towards 

 the base of the wings. Underside rich silky brown, terminal 

 margins of the wings broadly paler, sprinkled with lilacine scales 

 near an inward well-defined very pale brownish-yellow sinuous line ; 

 the basal five-sixths of the wings darkening perceptibly outwards. 

 Fore wing with two pairs of transverse sinuous dark narrow bands 

 across cell, followed by an oblique diseal similar band, from costa 

 to interspace 1. Hind wing with two similar transverse bands 

 divergent posteriorly, an oval yellowish-white spot in interspaces 

 2 and 6 respectively and a dark tornal spot ; the spot in inter- 

 space 2 shaded with brown. Antennae red ; head, thorax and 

 abdomen brown. Male secondary sex-mark a small erectile tuft of 

 hair, not covering apparently any specialized scales, near the base 

 of the subcostal vein on the upperside of the hind wing. 



Exp. 6 $ HO-122 mm. (4'3-4'8"). 



Hab. Sikhim to Assam ; Burma and Tenasserim, along the hill- 

 ranges at low elevations. 



224. Thaumantis lucipor, Westivood, in Dblday., Westw. # Sew. Gen. 



I)i. Lep. 1851, p. 337 ; M. # de N. Butt. Ind. i, 1883, p. 306 

 footnote. 



<5 . Upperside dark brown. Fore wing, except the costal margin 

 narrowly, apex and terminal margin more broadly, suffused with 

 the most brilliant metallic, somewhat iridescent blue. Hind wing 

 similar, the terminal and dorsal margins more broadly uniform 

 dark brown. Underside. Fore wing : the basal three-fourths very 

 dark maroon-brown, the dorsal and terminal margins broadly paler, 

 the dark basal area crossed from costa to vein 2 by an oblique bar 

 of irrorated pale scales, irrorations of like scales in the cell, at the 

 apex of wing and on the broad pale terminal margin. Hind wing 



