LEPIDOPTERA HETEROCERA. 



1127 



Genus 19. PERNA. 



Corpus robustum. Proboscis non conspicua. Palpi breves, 

 valde pilosi, caput non superantes ; articulus 3us minimus. An- 

 tennae thorace non longiores. Abdomen alas posticas paullo su- 

 perans. Pedes validi, pilosi ; tibiae posticas calcaribus duobus 

 minutis apicalibus. Alae mediocriter latae ; anticae apud costam 

 rectae, apice vix angulatae, margine vix convexo. Mas. — Antenna 

 sat late pectitiatae. Alae anticae apud marginem exteriorem vix 

 obliquae. Fcem. — Antennae vix pectinatae. Alae anticae apud mar- 

 ginem exteriorem sat obliquae. 



Body stout. Proboscis not visible. Palpi short, very pilose, 

 not extending beyond the head ; third joint very minute. Antennae 

 as long as the thorax. Abdomen extending a little beyond the hind 

 wings. Legs stout, pilose; hind tibiae with two minute apical 

 spurs. Wings moderately broad. Fore wings straight along the 

 costa, hardly angular at the tips, hardly convex along the exterior 

 border; discal areolet intersected by a secondary vein; first and 

 second inferior veins almost contiguous at the base ; third nearer to 

 the second than to the fourth. Male. — Antennae rather deeply pec- 

 tinated to the tips. Wings rather short. Fore wings very slightly 

 oblique along the exterior border. Female. — Antennae very minutely 

 pectinated. Wings moderately long. Fore wings rather oblique 

 along the exterior border. 



A. Thorax fuscus. 



A. Abdomen apice obscurum. 



B. Abdomen apice album. 



B. Thorax luteus. 



exposita, Lewin. 



varia, Walk. 



flavescens, Walk. 



1. Perna exposita. 



Mas. Ferrugineo-fusca ; thorax cano varius ; abdomen ferrugi- 

 neum ; alee anticce macula basali nigra, fasciis tribus angulo- 

 sis nigris albo ex parte marginatis, strigaque nigra discali 

 albo uniguttata. Foem. — Cinereo-fusca ; alee antica macula 

 basali fasciisque tribus angulosis subobliquis nigricantibus. 



Bombyx exposita, Lewin, Prodr. Ent. 8, pi. 7. Boisd. Voy. de 



r Astrolabe, Pt. 1. Lep. 223, 5. 

 Bombyx pusilla, Donov. Ins. New Holl. Lep. pi. Boisd. Voy. de 



I Astrolabe, Pt. 1. Lep. 222, 4. 



