LEPIDOPTERA HETEROCERA. 1375 



Genus ERTLUSA. 



Mas et fcem. Corpus sat robustum. Proboscis mediocris. 

 Palpi arcuati, dense fimbriati, oblique ascendentes, verticem non 

 superantes ; articulus 3us brevissimus. Pedes robusti, longiusculi, 

 femoribus anticis subfimbriatis, tibiis anticis subdilatatis. Alae an- 

 ticae longae, subacutae, margine exteriore convexo perobliquo. Mas. 

 — Antennae setulosae. Abdomen alas posticas dimidio superans, 

 basin versus subcompressum ; fasciculus apicalis longus. 



Male and female. Body moderately stout. Proboscis of the 

 usual length. Palpi obliquely ascending, applied to the head, not 

 rising higher than the vertex, thickly fringed on the underside; 

 third joint extremely short. Legs stout, rather long ; fore femora 

 slightly fringed beneath ; fore tibiae slightly dilated ; hind tibiae with 

 four long spurs. Wings long. Fore wings slightly acute ; exterior 

 border convex, very oblique ; first, second and third inferior veins 

 contiguous at the base ; fourth moderately remote from the third. 

 Male. — Antennae setulose. Abdomen extending for full half its 

 length beyond the hind wings, slightly compressed at one-third of 

 the length ; apical tuft elongate. Wings narrower than those of 

 the female ; fore wings more acute. Female. — Abdomen extending 

 somewhat beyond the hind wings. 



This group has much resemblance and perhaps much affinity 

 to the Dioptidce and to the Lithosiidee. 



Erilusa croceiceps. 



Mas et fcem. Nigricans ; caput, palpi, thorax anticus, venter 

 pedesque laete ochracea ; alee anticce striga cinerea latissima 

 semihyalina ; posticce cinerece, semihyalince, margine lato 

 nigricante. Fcem. — Abdomen apice ochraceum. 



Male and female. Blackish. Head, palpi, fore part of the 

 thorax, abdomen beneath and legs bright ochraceous. Fore wings 

 with a cinereous very broad and very iridescent semihyaline streak 

 in the disk. Hind wings cinereous, iridescent, semihyaline, broadly 

 blackish-bordered. Female. — Abdomen ochraceous at the tip. 

 Length of the body 7 — 8 lines ; of the wings 15 — 17 lines. 



u. Para. From Mr. Bates' collection. 

 b. Ega. From Mr, Bates' collection. 



z2 



