AMATHUSIIN 22. 183 
Thaumantis Ramdeo, Moore (Westwood, Trans. Ent. Soc. 1856, p. 172) ; Catal. Lep. Mus. E. I. 
Company, i. p. 215 (1857). 
Imaco.—Male. Upperside dusky purpurescent-brown, somewhat palest exter- 
nally; cilia cinerescent-brown. Forewing with a broad excurved discal brilliant 
metallic-blue band, which extends from the costal vein outside the cell to just beneath 
the lower median veinlet, the blue being of a bright violaceous ultramarine tint, with 
pale cobalt-blue scales disposed lunularly upon its outer half; a slightly-defined 
lilacine-speckled lunular streak descending from the costa before the apex. Hindwing 
with a large medial-discal rounded similar brilliant blue patch, with pale cobalt-blue 
centre. Underside paler; the outer border broadly palest and somewhat cinerescent- 
brown. Forewing crossed within the cell by two prominent darker purpurescent- 
brown waved fasciz, one upon the discocellulars, an outwardly-oblique inner-discal 
sinuous line, an erect outer-discal sinuous line, and a much less-defined zigzag sub- 
marginal line; the three latter lines outwardly-edged with lilacine-white scales, which 
are sharply defined on the erect outer-discal line, the interspace between the latter and 
the submarginal line being also sprinkled with lilacine scales. Hindwing crossed by a 
similar prominent darker brown angulated subbasal line, a wavy mner-discal line, a 
sinuous outer-discal line, and a less-defined zigzag submarginal line, the two latter lines 
and their interspace speckled with lilacine scales ; between the subcostals is a pro- 
minent small round yellow ocellus, with a black outwardly-disposed central dot and outer 
black ring, and between the lower medians is a larger well-formed rounded ocellus, 
with black centre speckled with a few lilacine scales, a slender yellow ring and a 
black outer ring; there is also a small black anal spot situated outside the end of the 
submarginal line. Body, legs, and palpi dark-brown ; antennz reddish. 
Female. Upperside asin the male. Underside alsoas in the male, but with the 
markings more prominently defined. 
In the form named Ramdeo, the upperside of both sexes differs only in having 
the brilliant blue patch extending over the whole of the middle of the wings, the 
patch also being even more intensely brilliant in its lustre. The underside also differs 
only in being somewhat paler, and in having the two ocelloid spots on the hindwing 
smaller and less prominently developed. 
Expanse, d 4, ? 4,5, to 4,8 inches. 
Haprrat.—Sikkim; Assam; Naga and Khasia Hills; Silket; Burma. 
Distrizution.—* It is not uncommon in Sikkim.” Mr. Wood-Mason took it on 
Nemotha, in Cachar, in September and October, noting that the “‘ scent fans of the 
male are vanilla-scented”’ (Butt. Ind. 305). ‘* Ramdeo is also found over the same 
ground as Diores ; the Indian Museum, Calcutta, has it from Sibsagar, in Assam, and 
from the Daffla Hills” (id. p. 306). According to Mr. Elwes (Tr. Ent. Soc. 1888, 
333) ‘this species is not uncommon in shady ravines in Sikkim at from 2000 to 4000 
