68 PSTCHID^.— DKEPANULID^. 



PTEROXYS, g. n. 

 Male. Antennae bipectinated, with long plumose branches decreasing in length distally. 

 Head small ; thorax and abdomen slender. Fore leg with no tibial spine. Fore wing long 

 and narrow ; the two internal veins anastomosing, but sending no branch to inner margin ; 

 the third and fourth subcostals stalked. Hind wing with a bar between the costal and sub- 

 costal nervures. Veinlets in the cell of both wings forked. (See p. 65.) 



Pteroxys goniatus. (Plate CLIX. fig, 20 & Plate CLXXVI. fig. 14.) 



Expanse $ \ inch. 



Male. Uniform dark brown ; the wings sparsely covered with brown hair-like scales ; the 

 apices of both wings pointed. Fore ^\-ing with the upper radial absent. Hind wing with 

 the lower subcostal absent. 



Larva-case formed of comminuted fragments of yellowish-grey vegetable matter, which 

 are all directed towards the pointed posterior end. The larva feeds on Zimiberacea, 

 grasses, &c. 



COSSID^. 



Zeuzera postexcisa. (Plate CLIX. fig. 18.) 



Expanse c? 2 inches. 



Male. Anteana3 black, the sliaft white towards the base ; vertex of head, thorax, and 

 abdomen white ; collar blue-black at vertex ; tegulse with one spot ; pro-, meso-, and meta- 

 thorax each with a pair of spots, the last with an additional medial spot ; abdomen with one 

 spot on vertex and two pairs of lateral spots to each segment. Fore wing white, with series 

 of numerous small blue-black spots in each interspace, those in the interspaces between the 

 first median and fiftli subcostal nervules being obsolescent except the marginal scries ; the 

 spots in the cell few. Hind wing with a deep excision on the outer margin between the 

 interno-median and first median veins ; a series of obsolescent spots in the interspaces between 

 the first median and costal veins ; a very jjromineut blue-black marginal streak at the 

 excision ; small spots at the second and third median veins and a naiTow streak at apex. 



The venation is similar to that of Z. cesculi, except that the third subcostal nervule of 

 the fore wing is given ott' after the end of the cell instead of at the end ; whilst in Z. coffece, 

 which it externally much resembles, the neuration of the hind wing differs considerably. In 

 the Indian species the mouth-parts are totally absent, whilst in Z. (csct/li they ai'c rudimentary. 



DREPANULID^. 



Drepana bracteata. (Plate CLX, fig. 5.) 



Expanse ? 2^ inches. 



Female. Fawn-colour, Fore w iug irroratcd with bluish-silvery scales, especially imme- 



