LEPIDOPTERA HETEROCERA. 825 



posticas non superans. Pedes graciles, subnudi; tibiae anticae sub- 

 ciliatae, posticae calcaribus duobus minutis apicalibus. Alae latae ; 

 anticae apud costam vix convexae, apice subacuminatae. 



Male. Body very slender. Proboscis very short or obsolete. 

 Palpi short, bare, not extending beyond the head ; second joint 

 much longer than the first: third minute, conical, acuminated. 

 Antennae deeply pectinated, hardly more than one-third of the 

 length of the body. Abdomen not extending so far as the hind 

 wings. Legs slender, almost bare ; fore tibiae slightly ciliated ; 

 hind tibiae with two minute apical spurs. Wings broad. Fore 

 wings hardly convex in front, slightly acuminated at the tips ; 

 second inferior vein thrice further from the third than from the first ; 

 third as far from the second as from the fourth. Hind wings 

 slightly acuminated at the interior angle. 



This genus much resembles Redoa. 



1. Caviria substrigosa. 



Mas. Alba; alee argenteo-albce, anticce fasciis duabus obliquis 

 micantibw. 



Male. White. Body and legs testaceous, with white hairs 

 and tomentum. Wings silvery white. Fore wings with two oblique 

 more shining bands, composed of elevated scales. Length of the 

 body 5 lines ; of the wings 14 lines. 



a — c. Brazil. 



Genus 36. CBOPEKA. 



Mas. Corpus sat gracile. Palpi porrecti, sat graciles, valde 

 pilosi, caput paullo superantes; articulus 2us lo multo longior ; 3us 

 parvus, acutus. Antennae pectinatse, thorace vix longiores. Abdo- 

 men alas posticas non superans. Pedes gra'cillimi, vix pilosi ; tibiae 

 posticae calcaribus quatuor longis. Alae latae, semihyalinae. 



Male. Body rather slender. Palpi porrect, rather slender, 

 very pilose, extending a little beyond the head; second joint much 

 longer than the first; third small, acute. Antennae pectinated, 

 hardly longer than the thorax ; branches short. Abdomen extending 

 nearly as far as the hind wings. Legs very slender ; femora slightly 

 hairy ; tibiae and tarsi almost bare ; hind tibiae with four long spurs. 

 Wings broad, semihyaline, very thinly clothed with hairs. Fore 

 wings hardly convex along the costa, rounded at the tips, oblique 



PART IV. F 



