LEPIDOPTERA HETEROCERA. 403 



12. ISOPTERYX SPILOMELALIS. 



Mas. Albida ; palpi erecti ; articulus Sus gracilis, acutus, 2i dimidio 

 brevior ; antenna validce, simplices ; thorax nigro guttatus ; 

 alee fasciis obliquis deviis incompletis cinereo-fuscis, lineis 

 duabus nigricantibus undulatis 2a flexa, punctis marginalia 

 bus nigris ,- anticce costa nigro notata. 



Male. Whitish. Palpi vertical ; third joint slender, acute, 

 less than half the length of the second. Antennae stout, simple. 

 Thorax with black dots. Abdomen extending for nearly half its 

 length beyond the hind wings, somewhat compressed towards the 

 tip ; apical tuft long. Wings with oblique irregular and incom- 

 plete cinereous-brown bands ; interior and exterior lines blackish, 

 undulating, the latter bent, marginal points black, irregular. 

 Fore wings with four black marks on the costa ; the second and the 

 fourth terminating the interior and exterior lines ; the third elon- 

 gated hindward to the disk. Length of the body 2 lines ; of the 

 wings 5£ lines. 



a. Ceylon. From Mr. Stevens* collection. 



13. ISOPTERYX ACCLARALIS. 



Mas. Pallide ochracea, snbtus alba ; thorax albo binotatus ; alcS 

 lineis duabus nigricantibus undulatis valde diffusis, linea 

 marginali alba fusco marginata, margine exteriore valde undu- 

 lato ; anticce valde acu tee, lituris variis albis fusco marginatis ; 

 postica lineis duabus albis fusco marginatis, exteriore undulata. 



Male. Pale ochraceous, mostly white beneath. Palpi white, 

 slightly ascending : tips of the joints pale ochraceous ; third joint 

 linear, conical at the tip, about half the length of the second. An- 

 tennae bare, rather stout. Thorax with a white mark in front. 

 Abdomen hardly extending beyond the hind wings. Wings with 

 two undulating and very diffuse blackish lines, and with a white 

 brown-bordered marginal line ; exterior border very undulating. 

 Fore wings very acute, with several white brown- bordered marks of 

 various shape and size. Hind wings with two white brown-bordered 

 lines ; the exterior one undulating. Length of the body 2J lines ; 

 of the wings 7 lines. 



a. Ceylon. Presented by R. Templeton, Esq. 



2 M 3 



