112 LEPIDOPTERA. 



Anteuuas of the male pectinated with slender, oblique, 

 solid, ciliated teeth, pale brown, shaft white ; palpi small 

 and slender, pale brown ; face smooth, white below, shading 

 above to red ; beneath the antennae is a deep transverse 

 channel, above which the head is rough and >vhite ; thorax 

 moderately stout, greenish-white, roughly and loosely covered 

 with long scales ; abdomen rather slender, tapering, silky- 

 white ; lateral and anal tufts spreading. Fore wings broad 

 and ample ; costa arched throughout ; apex angulated ; hind 

 mai'gin rather straight to the middle, there elbowed and 

 again almost straight to the anal angle, which is well formed ; 

 dorsal margin gently rounded, ciliated ; colour pale bluish- 

 green ; costa white ; first line straight, oblic|ue, white, faintly 

 edged outside with yellower green ; second line more oblique, 

 nearly straight, but curved up toward the costa, white, edged 

 more broadly inside with fuller green ; in the cilia at the apex 

 is a chestnut spot ; the remainder of the cilia silky-white, 

 waved and so depressed as to give the impression of being 

 shot with darker. Hind wings large and broad, pale bluish- 

 green ; in the middle is a straight transverse white stripe, 

 continued from the second line of the fore wings, and simi- 

 larly edged inside with yellow-green; hind margin crenulated 

 and in the middle having an angle almost suggesting a short 

 tail ; cilia silky-white. Female usually much larger, with 

 simple antennae, broad thorax, and much stouter abdomen ; 

 wings very ample, and the central stripe of the hind wings 

 rather curved. 



Underside white with a very slight green tinge, rather 

 more noticeable in the fore wings, but the costa of the latter 

 tinged with pale fulvous ; the transverse lines of the upper 

 side faintly visible. Body white ; legs very pale brown. 



The delicate green colour in this species fades gradually so 

 that there is change of colour according to the antiquity of 

 the specimen, sometimes to white-green, sometimes to a dull 

 tinge of yellow or pale buff. When fine there is little varia- 

 tion but sometimes the apical chestnut spot is obliterated, 



