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Show 450 MR. L. DE NICEVILLE ON N E W OR [May 3, distinguished from the same sex of L. europa by its more tawny coloration on the upperside, the discal band bright ochreous instead of white, with its outer edge more irregular, and by the underside of the hind wing having four well-formed perfect ocelli; in L. europa the black middle portion of all the ocelli except the upper one is entirely disintegrated and broken up into black dots. Mr. E. H. Man obtained a single specimen of this interesting species on Little Nicobar. LETHE GULNIHAL, n. sp. (Plate XXXIX. fig. 7, 3 •) Hab. Bhutan. Expanse. 3 2*45 inches. M A L E . U P P E R S I D E : both wings dark brown, with a distinct rich vinous gloss. Fore wing unmarked, except that the narrow discal band of the underside shows through paler on the upperside, the •wing being somewhat paler beyond. Hind wing with the four middle ocelli of the underside showing through indistinctly. U N D E R S I D E : both wings dull brown without any vinous gloss. Fore wing with a short narrow ferruginous line across the middle of the cell, another similar one towards its end, the lower discocellular nervule marked with ferruginous; a slightly outwardly-curved discal line from the subcostal nervure to just below the first median nervule, beyond which are four somewhat obscure small perfect ocelli placed between the nervules from the upper discoidal to the first median nervule; a fine dark brown marginal line bordered on either side with paler and an anteciliary similar dark line. Hind wing with a pair of narrow ferruginous lines across the disk from the costal to the sub-median nervure, the outer one very irregular; the lower discocellular nervule marked with ferruginous ; a series of six small distinct perfect ocelli composed of a black centre with a white pupil, a yellow, a black, and lastly a pale violet ring; the upper ocellus out of line, placed furthest from the margin and the largest, the three following subequal, the fifth a little larger, but not so large as the first, the sixth the smallest of all and geminate; two fine dark marginal lines enclosing a fine ochreous line, the inner one inwardly defined with pale lunules. The secondary sexual characters (" male marks ") of L. gulnihal are very peculiar and interesting. On the upperside of the hind wing it possesses the tuft of long black hair which is found in L. scanda, L. bhairava, L. latiaris, L. minerva, L. sihala, and L. ; in addition it has a large oval patch of deep black lustrous scales, which is bounded above by the first subcostal nervule, partially inwardly and beneath by that portion of the subcostal nervure between the bases of the first subcostal and discoidal nervules, the patch not nearly reaching the margin (this feature occurs in L. bhairava in a somewhat modified form); lastly, the inner margin of the fore wing is deeply outwardly bowed, which is a unique feature, the bowed portion beneath the submedian nervure clothed with differently formed and modified scales to those on the rest of the wing, this portion of the wing being clearly defined on |