‘Challenger’ Lepidoptera. 195 
and barely perceptibly touched with metallic scales, [Ex- 
panse of wings 23-28 millim. 
(Two damaged examples.) 
Rat Island, Straits of Malacca, Ist September, 1873. 
33. Lampides elianus. 
Hesperia elianus, Fabricius, Ent. Syst. iii. 1, p. 280 (1798). 
3 ¢. Ké Dulan, 25th September, 1874. 
34. Lampides etherialis, sp. n. 
3. Pale silvery blue above ; primaries with a narrow grey 
external border and blackish fringe : secondaries with a sub- 
marginal series of seven blackish spots, the fifth largest, the 
sixth and seventh confluent; a black marginal line; costal 
and abdominal borders pearl-white: body bluish white ; head 
and collar brown. Wings below brownish grey, with white 
and black markings, arranged as in L. aratus, except that the 
orange zones of the ocelloid spots of secondaries are narrower. 
Expanse of wings 31 millim. 
2. Smaller, whiter above, the grey border of primaries 
broader. Expanse of wings 29 millim. 
Ké Dulan, 25th September, 1874. 
The male of this species is of a beautiful silvery-blue colour, 
most nearly approached in Lalmenus evagoras of Australia, 
but of a purer (less green) shade. The female is more like 
L. aratus. 
35. Lampides aratus. 
Papilio aratus, Cramer, Pap. Exot. iv. pl. ceclxy. A, B (1782). 
3 ¢. Amboina, Ternate. 
56. Lycena ertnus ? 
Hesperia erinus, Fabricius, Syst. Ent. p. 525 (1775). 
Ternate. 
The examples are so much rubbed that it is impossible to 
be sure of this identification. 
Papilionide. 
PIERIN:. 
37. Delias plexaris. 
Papilio plexaris, Donovan, Ins. New Holl. pl. xviii. fig. 2 (1805), 
& ¢. Amboina, 
