124 THE LEPIDOPTERA OF CEYLON. 



Adult larva apple-green, of a semitransparent hue ; each segment except the 

 anal with, two dorsal and a sublateral spiney yellow tubercle, the tubercles also 

 sparsely hairy, the hairs black ; the back, sides, and beneath, as well as the legs, 

 with a few very fine hairs, those on the back yellow, the others black; on the 

 anterior segments is a smaller subdorsal and lower sublateral tubercle ; the dorsal 

 tubercles on third and fourth segments golden-yellow, with a black band. Head, 

 forelegs, and pad of anal legs rufous-bi-own. Cocoon large, of an irregular ovate 

 shape, formed of coarse pale rusty brown silk closely interwoven ; enclosed among 

 the leaves of the tree. 



" Feeds on Odina Wodier." {Dr. Thwaites.) 



Genus ATT AC US. 

 j4«acHS, Linnseus, Syst. Nat. 1, 2, p. 108 (1767); Hiibner, Verz. bek. Schmett. p. 155; Walker, 

 Catal. Lep. Het. B. M. v. p. 1200. 



Wings very large, each with a large hyaline more or less irregular triangular 

 spot : forewing triangular ; costa much arched, apex lengthened, convex and falcate, 

 exterior margin oblique, posterior angle rounded ; cell short, broad, open ; subcostal 

 with five branches, first emitted at one-half between base and fourth, second near to 

 first, bifid, the third starting from below at a short distance from its base ; median 

 recurved, arched at its base, three-branched, lower branch at half distance between 

 the base and second ; submedian with a short veinlet from below the base : hindwing 

 broad, apex rounded, exterior margin and anal angle convex; cell short, broad, open; 

 costal vein, arched ; subcostal three-branched, first at two-thirds between the base 

 and third ; median three-branched, first at two-thirds between the base and third ; 

 submedian recurved. Body stout, short, woolly ; palpi very short, thick ; antennas 

 large, broadly bipectinated, the branches ciliated ; legs short, thick. 



ATTACUS TAPROBANIS (Plate 127, Fig. 1, ^, la, larva). 

 Purplish-ferruginous, basal and discal areas grey and black speckled, the discal 

 area ' also speckled with olive-yellow scales. Both wings with a black-bordered 

 hyaline white central triangular spot, that on the forewing elongated and with 

 pointed angles, that on the hindwing broad and with rounded inner angles. Foi^ewing 

 crossed by an antemedial and a postmedial red and black bordered white band, the 

 former angulated on the median vein, the latter recurved and somewhat lunular; 

 above the central hyaline spot is a small slender similar streak which extends to or 

 crosses the outer white band ; the costal margin is grey and black speckled, and 

 terminates in a black subapical spot, below which is a slender purple-red streak and 

 a white-speckled sinuous line, the apex being paler and suffused with red and olive- 

 yellow, below which the marginal border is more or less ochreous olive-brown, and is 

 traversed by a slender black waved line : hindwing crossed by a similar coloured 



