580 CATALOGUE OF 



Genus COLLA. 



Mas. Corpus robust urn. Proboscis nulla. Palpi porrecti, 

 graciles, caput non superantes ; articulus 3us minimus. Antennae 

 breves, laiissime pectinate. Abdomen alas postieas non superans. 

 Pedes breves, densissime languiuosi. Alae latae, semihyaline, sub- 

 nudas ; anticae subacutae, margine exteriore convexo perobliquo. 



Male. Body stout. Proboscis obsolete. Palpi porrect, slender, 

 not extending beyond tbe bead ; third joint extremely small. An- 

 tennas short, very broadly pectinated. Abdomen not extending 

 beyond tbe hind wings. Legs short ; femora and tibiae most densely 

 lanuginous. Wings broad, semihyaline, nearly bare. Fore wings 

 slightly acute; exterior border convex, very oblique; first and 

 second inferior veins connected at tbe base; third remote; three 

 nearly parallel superior veins. 



COLLA GLAUCESCENS. 



Mas. Obscure ochracea ; corpus flaveseens, subtus album ; caput 

 album ; abdomen apice fuscum ; alee anticce fasciis tribus ob- 

 liquis in deter minatis glauco-cinereis^ lituris tribus posticis 

 ochraceis ; posticce fasciis duabus indeterminatis cinereis postice 

 nigris, lituris duabus posticis ochro.ceis. 



Male. Dark ochraceous. Body yellowish white on each side 

 and beneath. Head white in front. Antennae ocbraceous. Ab- 

 domen brown at the tip. Legs with white hairs. Fore wings with 

 four oblique irregular and incomplete glaucous grey bands ; first 

 and second bands broad, connected ; third very near the fourth, 

 which is marginal ; three ochraceous marks on the interior border. 

 Hind wings with two indistinct incomplete greyish bands, which 

 are black towards the interior border, where there are two ochraceous 

 marks. Length of the body 12 lines; of the wings 36 Hues. 



a. Bogota. From Mr. Stevens' collection. 



Genus MUSTILIA. 



Mas. Corpus laeve, crassum. Proboscis vix conspicua. Palpi 

 brevissimi. Antennae latissime pectinatae, dimidio fere apicali 

 serratae. Abdomen subattenuatum, alas posticas perpaullo superans. 

 Pedes breves, robusti, pilosi. Alae anticae valde productae, valde 

 falcatae, margine exteriore. vix convexo ; postiuae margine interiore 

 truncate 



