BAOEIS.— AEROMACIIUS. 



617 



but there is no teudency to vary in the direction of the nnicolorous form met 

 with in the latter locality, Avhich Moore has named B. unicolor *, and 

 de Xiccville has figui'ed as a female variety of H. oceia f . 



Elwes (Trans. Ent. Soc. Lond. 1888, 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. scopulifera, 

 Moore, to be referable to B. oceia. 



Bistnhution. Philippines, Calcutta, Burmah, Sikkim, Pegu, Northern 

 China. 



Genus AEROMACHUS. 



Jeromachus, de Niceville, Journ. Bomb. Nat. Hist. Soc. v. p. 21 i (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 ahout 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 considei-ably below 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 oft 

 very near to the end of the cell, the third median originating at the poirt where the lower 

 discocellular nervule meets the median nervure ; the median nervure strongly bent upward.s 

 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 apes 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 iigure 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 off 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 and internal 



* Proc. Zool. Soc. Lond. 1SS3, p. 533. 



t Journ. Asiat. Soc. Beng. lii. p. S5, pi. x. fig. 11 (1S83). 



