TEEPSICHROIS. 
Trepsichrois linnasi. 
Papilio midamus (part.), Linnaeus, Mus. Ulr. p. 251 (17G4). 
Eiiplvea Diidamus, Doubleday & Hewitson, Diurn. Lep. p. 87. 
Trepsichrois midamus, Butler, Journ. Liun. Soc, Zool. xiv. p. 297 (1878) ; Distant, 
lUiop. Malay, p. 24, pi. ii. figs. 8, 9, ? (1882). 
Euplwa {Trepsichrois) midam,us, Marshall & de Niceville, Butt. Ind. p. 74, pi. viii. 
fig. 13, ? (1882). 
Trepsichrois linmei, Moore, Proc. Zool. Soc. Loud. p. 286, pi. xxix. fig. 4, $ , pi. xxx. 
fig. l,c? (1883) ; Lep. Indica, p. 100, pi. xxv. figs. 1 (larva aud pupa), 1% IMd ? ) 
(1891). 
Male. Primaries deep velvety fuliginous shot with brilliant blue, which colour appears in certain 
lights to bo the ground-colour; a pale blue spot in the discoirlal cell and one in each nervular 
interspace below it form an oblique series of three, and from the middle one of these there is a 
curved series of live to the costa, beyond is a submarginal series of eight spots and a marginal 
series, but the latter does not quite reach the costa. Secondaries velvety brown, costal half, 
especially towards outer margin, ashy grey ; there is a whitish patch in the cell just below 
the origin of first subcostal nervule, and in some specimens a small blue spot just outside the 
cell between second and third median nervules. 
Female. Brown, darker towards apex of primaries. Primaries with a large patch of bright blue 
on apical half; the spots are placed as in the male, but are white in colour; there is a whitish 
streak in the cell, and another between the median and submedian nervures. Secondaries 
have a marginal row of round white spots, a submarginal series of white streaks, which are 
short towards costa, but extend to tbe base of the wing below median ncrvure, a discal series 
whii-h increase in length towards costa, and there are four white streaks in the discoidal cell. 
Expanse, c? 75-120 millim., $ 104-120 millim. 
As pointed out by Mr. Moore, P. midamus of Linngeus has long been con- 
founded with this species, which is probably due to the fact that Linnaeus 
himself referred, "in his original description of P. midamus (Syst. Nat. 1758, 
p. 470). to Ehret's figure on plate iii. as well as to that on his plate xi., 
and in the Mus. Ulricae, p. 251, therein supplementing his description of 
P. midamus with that of the present insect." 
Common throughout Southern Asia. I have received the species from 
Ichang, Central China, and from various localities in Western China, but it 
does not appear to have been common in any of the places. The Chinese 
examples agree in almost eveiy particular with specimens from Darjiling. 
The larva of this species is referred to by Marshall and de Niceville (Butt. 
Ind. i. p. 75) as follows : — 
" Ground-colour testaceous, marked with crimson and black perpendicular lines on the segments, a 
spiracular row of black spots and some yellow blotches just above the legs. The face is also 
