

LEPIDOPTERA HETEROCERA. 1975 



,ip, a little shorter than the second. Antennae slender, very minutely 

 filiated, more than half the length of the body. Thorax smooth, 

 squamous. Abdomen conical, not extending beyond the hind wings. 

 Legs slender, bare ; hind tibiae with very long spurs. Wings rather 

 aarrow, not denticulated, forming in the middle of the exterior 

 oorder a distinct obtuse angle, which is most apparent in the hind 

 wings. 



Maltana thermisioides. 

 Fcem. PalUdissime cervina ; caput et thorax anticus obscuriora ; 

 alee tinea obscuriore obliqua recta postmedia, punctis submar- 

 ginalibus lineaque submarginali undulata indistincta obscuri- 

 oribus ; anticce tinea postmedia apud costam retracta, linea 

 antemedia fusca informi, orbicutari e puncto nigricante^ reni- 

 formi nigricante submarginata, striga antica fusca obliqua. 

 Female. Very pale fawn-colour. Head and fore part of the 

 thorax somewhat darker. Wings with a slender straight darker 

 exterior line, which forms an angle near the costa of the fore wings ; 

 submarginal points and subtnarginal line brown ; the latter diffuse, 

 undulating, indistinct. Fore wings with the interior line brown, 

 irregular; orbicular mark blackish, pnnctiform; reniform mark with 

 an incomplete blackish border ; an oblique brown streak between the 

 reniform mark and the costa. Length of the body 6 lines; of the 

 wings 14 lines. 

 a. Venezuela. From Mr. Dyson's collection. 



Genus TYRISSA. 



Mas. Corpus robustum. Proboscis mediocris. Palpi lati, 

 pubescentes, oblique ascendentes, verticem vix superantes; articulus 

 3us lanceolatus, 2i dimidio brevior. Antennae setulosae. Abdomen 

 alas posticas paullo superans; fasciculus apicalis minimus. Pedes 

 leaves, graciles ; femora fimbriata ; calcaria longa, gracillima. Alae 

 anticse elongaiae, apice rotundatae, margine exteriore subangulato 

 subexcavato; posticae apud apices oblique truncatae. 



Male. Body stout. Proboscis of the usual length. Palpi 

 broad, pubescent, obliquely ascending, hardly rising higher than the 

 vertex ; third joint lanceolate, less than half the length of the second. 

 Antennae minutely setulose. Abdomen extending a little beyond 

 the hind wings; apical tuft very small, Legs smooth, slender; 

 femora fringed with long hairs; spurs long, very slender. Wings 



