LEPIDOPTERA HETEROCERA. 1101 



Female. White. Head brown beneath. Palpi brown, with 

 white tips. Antennae tawny. Thorax and fore wings with many 

 brown plumes. Abdomen pale fawn-colour, with an interrupted 

 white dorsal stripe and a white tip. Fore wings with two slight 

 luteous bands, the outer one much more oblique and angular than 

 the inner one. Hind wings with two very indistinct grayish discal 

 bands. Length of the body 15 lines ; of the wings 42 lines. 



a. Kio Janeiro. From Mr. Stevens' collection. 



Genus TANASSA. 



Mas. Corpus sat robustum. Proboscis capitis latitudine vix 

 brevior. Palpi pilosi, subaseendentes, caput vix superantes ; articu- 

 lus 3us obtusus, minimus. Antennae mediocriter pectinatae, apices 

 versus nudae, corporis dirnidio multo longiores. Abdomen alas pos- 

 ticas triente superans. Pedes pilosi, sat graciles ; tibiae postica? 

 calcaribus quatuor longiusculis. Alae anticae perangustae, apud 

 certain recta?, apice acuminata?, margine exteriore perobliquo, inte- 

 rfere fasciculato. 



Male. Body moderately stout. Proboscis nearly as long as 

 the breadth of the head. Palpi pilose, very slightly ascending, 

 hardly extending beyond the head ; third joint obtuse, very small. 

 Antennae much more than half the length of the body, moderately 

 pectinated to about three-fifths of the length. Abdomen extending 

 for about one- third of its length beyond the hind wings. Legs 

 pilose, rather slender; hind tibiae with four rather long spurs. 

 Fore wings very narrow, straight along the costa, acuminated at the 

 tips, extremely oblique along the exterior border ; interior angle 

 very obtuse ; interior border tufted before half its length ; three in- 

 ferior veins ; first and second nearly contiguous at the base ; third 

 remote. 



1. Janassa lignicolor. 



Mas. Pallide cinerea ; antennce fulvce ; ala anticce strigis non- 

 nullis fuscis, apud discum ex parte albce. 



Male. Pale cinereous. Antennae tawny. Fore wings with 

 some brown streaks, partly white in the disk; tuft of the interior 

 border dark brown. Hind wings white, with a dark brown mark by 

 the interior angle. Length of the body 8 lines ; of the wings 18 

 lines. 



From Mr. Milne's collection. 



2 f 3 



