LEPIDOPTERA HETEROCERA. 805 



MlCROPHYSA DECISSIMA. 



Foem. Fusca, subtus lutea ; abdominis segmenta cinereo mar- 

 ginata ; aim anticm fascia albida subrecta vix obliqaa fusco 

 interlineata nigro marginata, lituris tribus exterioribus nigris; 

 posticm lutem, fusco marginatm. 



Female. Brown, luteous beneath. Palpi smooth, erect, not 

 rising higher than the vertex; third joint elongate-conical. Ab- 

 dominal segments with cinereous hind borders. Fore wings with a 

 concise whitish nearly straight and upright band, which is interlined 

 with brown and is bordered with black ; three more exterior black 

 marks, of which the middle one is contiguous to the band ; fringe 

 cinereous. Hind wings luteous, with a brown border. Length of 

 the body 3^ lines ; of the wings 9 lines. 



South Africa. In Mr. D'Urban's collection. 



Genus LERNA. 



Mas etfcem. Corpus laeve, sat gracile. Proboscis mediocris. 

 Palpi laeves, graciles, oblique ascendentes ; articulus 3us longi- 

 conicus, 2i dimidio vix brevior. Antennae maris setulosa?. Ab- 

 domen alas posticas non superans ; fasciculus apicalis maris parvus. 

 Pedes laeves, graciles ; calcaria brevia. Alae anticae latae, acutae, 

 margine exteriore subobliquo. 



Male and female. Body smooth, rather slender. Proboscis of 

 the usual length. Palpi smooth, slender, obliquely ascending, not 

 rising so high as the vertex; third joint elongate-conical, nearly 

 half the length of the second. Antennae slender, minutely setulose 

 in the male. Abdomen not extending beyond the hind wings ; 

 apical tuft of the male small. Legs smooth, slender; hind tibiae 

 with four short spurs. Wings broad. Fore wiugs acute ; exterior 

 border straight, slightly oblique ; second inferior vein as near to the 

 third as to the first ; fourth remote. 



This genus has some resemblance and perhaps some affinity to 

 Thelaina* 



Lerna nivosa. 



Mas et foem. Nivea ; caput antice ochraceum ; antenna nigra ; 

 thorax nigro bipunctatus ; abdomen apice pallide ochraceum ; 

 pedes ochraceo nigroque varii ; alee anticce costa nigra apice 



K 2 



