BAOEIS.— AEROMACHUS. 617 
but there is no teudency to vary iu the direction of the uuicolorous form met 
Avith in the latter locality, which Moore has named B. nnicolor*, and 
de Niceville has figured as a female variety of B. oceia f . 
Elwes (Trans. Ent. Soc. Lond. 18S8, p. 443) states that B. oceia is common 
in Sikkim, from 4000 to 5000 feet, throughout the greater part of the season, 
and is very variable in the number of the spots. He considers B. scojniUfera, 
Moore, to be referable to B. oceia. 
Distribution. Philippines, Calcutta, Burmah, Sikkim, Pegu, Northern 
China. 
Genus AEROMACHUS. 
Aeromachus, Ae Niceville, Journ. Bomb. Nat. Hist. Soc. v. p. 214 (1890); Watson, 
Proc. Zool. Soc. Loud. 1893, p. 80. 
" Both wings very small. Fore -wing triangular, costa quite straight, apex acute, outer margin 
gently convex, inner angle rounded, inner margin straight, longer than the outer margin ; 
costal nervure ending about opposite the apex of the discoidal cell, well separated from the 
costa, bent upwards to the costa towards its end ; base of second subcostal nervule nearer to 
base of first than to base of third, fourth subcostal arising very near to the base of the third, 
reaching the apex of the wing ; terminal portion of subcostal nervure (often called a fifth 
subcostal nervule) ending on the outer margin considerably btlow the apex of the wing : 
upper discocellular nervule short, stout, outwardly oblique, straight ; middle discocellular 
sinuous ; lower discocellular shorter than the middle, straight, on the same straight line with 
the middle, inwardly oblique ; the median nervules with their bases equidistant, given olf 
very near to the end of the cell, the third median originating at the poitt where the lower 
discocellular nervule meets the median nervure ; the median nervure strongly bent upwards 
from the base of the second median nervule ; submedian nervure straight. 
" Male (in the type species only) with a broad oblique stripe of modified scales on the upperside. 
extending from the middle of the submedian nervure to the base of the second median 
nervule. Hind wing, much rounded throughout ; costa short ; costal nervure almost straight, 
first subcostal nervule bent upwards at base, thence straight to apex of wing ; subcostal 
nervure strongly bent downwards between the bases of the subcostal nervules, giving the 
appearance of a third (or upper) discocellular nervule, the subcostal nervure and its branches 
together forming a figure of almost the exact shape of a tuning-fork; discocellular nervules 
outwardly oblique, the upper concave, the lower shorter than the upper ; the discoidal nervule 
curved, and like the discocellular nervules, very fine but perfectly distinct ; second median 
nervule given ofi' some little distance before the lower end of the discoidal cell, more than 
twice as far from the base of the first as it is from the base of the third median ; all three 
median nervules, however, arising near to the lower end of the cell ; submedian ai\d internal 
* Proc. Zool. Soc. Lond. 1S83, p. 533. 
t Journ. Asiat. Soc. Beng. lii. p. 8-5, pi. x. fig. 11 (1S83). 
