LEPIDOPTERA HETEROCERA. 1147 



articulus 3us lanceolatus, 2i dimidio vix brevior. Antennae sub- 

 pectinatae. Pedes laeves, graciles ; tibiae intermedin penicillo basali 

 longo; calcaria longa, gracilia. Alse anticae latae, acutee, margine 

 exteriore subrecto vix obliquo. 



Male, Body slender. Frontal tuft prominent. Proboscis short. 

 Palpi straight, slightly ascending, with a short fringe, full twice 

 longer than the breadth of the head ; third joint lanceolate, nearly 

 half the length of the second. Antennae slightly pectinated. Legs 

 smooth, slender ; middle tibiae with a long penicillate tnft at the 

 base; hind tibiae with four long slender spurs. Wings broad, not 

 long; fringe broad. Fore wings acute; exterior border almost 

 straight, hardly oblique. 



Nearly allied to Hypena, from which genus it may be dis- 

 tinguished by the pectinated antennae of the male. 



Britha biguttata. 



Mas. Cinerea, nigra conspersa ; ake linea marginali nigra, fimbria 

 nigro trilineata ; alee anticce fusco nebulosa, lineis quatuor 

 fuscis subobliquis, gutta discali nigra, lineis duabus sub- 

 marginalibus cinereis, la recta, 2a angulosa, maculis sub- 

 marginalibus nigris ; posticce obscure cinerea, striga cinerea 

 lata longitudinali alis anticis quoad lituris simili. 



Male. Cinereous. Thorax and fore wings black-speckled. 

 Wings with a black slightly festooned marginal line; fringe with 

 three slightly undulating blackish lines at the base. Fore wings 

 partly brown-shaded; this hue most prevalent towards the exterior 

 border; four incomplete slightly oblique brown lines; third and 

 fourth across the middle, approximate, including a black dot between 

 them ; two cinereous contiguous subrnarginal lines ; first straight ; 

 second zigzag, with some black spots between it and the exterior 

 border. Hind wings dark cinereous, except a broad longitudinal 

 middle streak, which has markings like those of the fore wings. 

 Length of the body 6 lines ; of the wings 14 lines. 



a. Moretou Bay. From Mr. Diggles' collection. 



Genus DERBETA. 



Mas. Corpus sat gpacile. Frons subproducta. Proboscis brevis. 

 Palpi porrecti, laeves, caput non superantes; articulus 3us brevissi- 

 mus. Antennae subpectinatae. Abdomen alas posticas paullo 

 superans; sexualia sat magna. Pedes laeves ; tibiae anteriores 



d2 



