LEPIDOPTEEA HETEROCEBA. 
441 
Genus 57. RUCUMA. 
Teem. Corpus robustum. Fasciculus frontalis porrectus, Palpi 
oblique ascendentes, verticem non superantes ; articulus 3«s brevis- 
simus. Ala? anticse subfalcatap, costa basi convexa reflexa extus 
incurva, margin e exteriore recto non obliquo. 
Female. Body robust. Frontal tuft prominent. Palpi ob- 
liquely ascending, not rising higher than the vertex ; third joint less 
than one-sixth of the length of the second. Fore wings subfalcate; 
costa convex and reflexed along the basal half, curved inward exte- 
riorly ; exterior border straight, except at the tip, not oblique. 
1. Rucuma kecurvana. 
Fcem. Cervina, subtus ochracea ; alee anticce subconspersee , lined 
obliqua postica fusca ; posticce ochracea. 
Female. Fawn-colour, ochraceous beneath. Fore wings indis- 
tinctly speckled, with a brown line, which extends from two-thirds of 
the length of the interior border to the disk. Hind wings ochraceous. 
Length of the body 5 lines ; of the wings 16 lines. 
a. Brazil. From Mr. Wallace’s collection. 
2 . Rucuma vacuana. 
Mas. Rufescens , gracilis ; palpi oblique ascendentes , articulo 2 o 
Jimbriato,3o brevissimo ; alee anticce subfalcatee , linea exte- 
riore nigricante subjlexa ; posticee cinereee , striga diffusa 
rufa. 
Male. Reddish, slender, cinereous beneath. Palpi obliquely 
ascending, as long as the breadth of the head ; second joint fringed 
above ; third very short. Antennae smooth, slender. Abdomen not 
extending beyond the hind wings ; apical Juft quadrate. Fore wings 
subfalcate, with an inflated pouch along the basal part of the costa; 
an exterior blackish transverse slightly bent line, which is continued 
across the hind wings ; costa convex towards the base, excavated 
exteriorly ; exterior border slightly angular in the middle, oblique 
hindward ; fringe cinereous, red about the angle. Hind wings 
cinereous, with a diffuse red streak extending from the disk to the 
