488 CATALOGUE Off 



Genus 5. NISTRA. 



Corpus gracile. Proboscis brevis. Palpi breves, laeves, ereeti ; 

 articulus 3us oblique truncatus, 2i dimidio non longior. Antennae 

 graciles, submoniliformes. Pedes graciles, laeves; tibiae anticas 

 breves, subincrassatae, subtus carinatas ; calcaria longissima. AlaB 

 sat angustae ; anticae apice reetangulatee, margine exteriore postico 

 valde rotundato. 



Body slender. Proboscis short. Palpi short, vertical, smooth ; 

 third joint short, obliquely truncated, not more than half the length 

 of the second. ' Antennae slender, submoniliform. Legs slender, 

 smooth ; fore tibiae short, slightly thickened, grooved beneath ; 

 spurs very long. Wings rather narrow. Fore wings rectangular at 

 the tips ; exterior border hardly oblique, except towards the interior 

 angle, near which it is much rounded. 



1. NlSTRA CCELATAL1S. 



Pallide flava ; caput fuscescens ; thorax an tice purpurascens ; alee 

 lineis duabusfuscis, interiore valde interrupta, exteriore minus 

 interrupta valde undulata ; anticce purpurascenies , apud cos- 

 tarn fuscescentes, basi margineque exteriore purpureis ; posticce 

 apice et apud angulum interior em purpureis. 



Pale yellow, white beneath. Head and palpi brownish. Tho- 

 rax metallic purplish in front. Wings with two brown lines ; inte- 

 rior line much interrupted, especially so in the hind wings ; exterior 

 line less interrupted, deeply undulating. Fore wings partly 

 brownish along the costa, with a diffuse purplish tinge in the disk, 

 metallic-purple at the base, broadly so along the exterior border, 

 except towards the interior angle. Hind wings broadly metallic- 

 purple about the tips, and with a metallic-purple patch on each side 

 of the interior angle. Length of the body 3 lines ; of the wings 

 8 lines. 



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



Genus 6. MASSEPHA. 



Corpus gracile. Fasciculus frontalis productus. Palpi breves, 

 subascendentes ; articulus 2us apice subdilatatus; 3us linearis ob- 

 tusus, 2i dimidio non longior. Antennae laeves, sat validae. Pedes 



