LEPIDOPTERA HETEROCERA. 155 



straight, much shorter than the second. Antennae short, stout, very 

 minutely serrated. Abdomen extending a little beyond the hind 

 wings, with long apical appendages or tentacles. Legs pilose ; spurs 

 extremely long. Wings rather short and narrow, without markings. 

 Fore wings hardly convex along the costa, somewhat rounded at the 

 tips; exterior border moderately oblique; interior angle much 

 rounded ; a white discal point. Length of the body 3 J lines; of the 

 wings 10 lines. 



a. Para. From Mr. Bates' collection. 



8. Palthis? Prettjsalis. 



Mas. Cinereo-fusca ; palpi validi, pilosi, refiexi ; antennce ro- 

 bustce, subserratce ; abdomen cinereum, alas posticas superans, 

 apice fasci cula turn ; pedes validi, pilosi, calcaribus longissi- 

 mis ; alee micacece, sat angustce, fimbria lata; anticce nigro 

 conspersce, apice rotundatce, margine exterior e vix obliquo ; 

 posticce apud marginem interiorem latissime fimbriates. 



Male. Cinereous-brown. Palpi stout, pilose, re flexed. An- 

 tennae stout, very minutely serrated. Abdomen cinereous, tufted at 

 the tip, extending somewhat beyond the hind wings. Legs stout, 

 pilose; spurs very long. Wings glistening, rather narrow; fringe 

 broad. Fore wings speckled with black, somewhat rounded at the 

 tips, hardly oblique along the exterior border; lines obsolete. 

 Hind wings rather paler; interior border very broadly fringed. 

 Length of the body 5^- lines ; of the wings 11 lines. . 



The specimen described is injured, and it may form a third 

 genus. 



a. Honduras. From Mr. Dyson's collection. 



Genus 21. MACALLA. 



Mas. Corpus sat robustum. Caput cornubus duobus deflexis 

 squamosis plumosis. Palpi squamosi, oblique ascendentes, non 

 longi ; articulus 2us subarcuatus, penicillo basali ; 3us lanceolatus, 

 2i dimidio brevior. Antennae sat graciles, subsetosae, subpubescentes. 

 Abdomen alas posticas non aut vix superans. Pedes longiusculi, 

 sat validi, subpilosi, calcaribus longis. Alae anticae angustae, apud 

 costam vix convexae, apice acutae, margine exteriore perobliquo; 

 posticae semivitreae. Fcem. — Caput inermes. Antennae simplices. 



Male. — Body moderately stout. Head furnished between the 

 antenna with two long, vertical, diverging, squamous horns, which 



