LEPIDOPTERA HETEROCERA. 1197 



to rather beyond three-fourths of the interior border of the hind 

 wings ; some dark brown dots near the exterior border. Fore 

 wings sub falcate, with a vitreous discal dot. Length of the body 

 16 lines ; of the wings 58 lines. 



a. East Indies. From Mr. Argent's collection. 



Page 1194. 



Genus PERIGA. 



Mas, Corpus gracile. Proboscis non conspicua. Palpi por- 

 recti, caput non superantes ; articulus 2us lo plus duplo longior ; 

 3us minutus, brevi-conicus. Antennae mediocriter pectinatae, tho- 

 race non longiores. Pedes breviusculi, sat pilosi ; tibiae posticae 

 calcaribus duobus apicalibus minutis. AUe latissimae ; anticae 

 apud costam subconvexae, apice angulatae, margine exteriore sub- 

 obliquo ; posticae abdomen longe superantes. 



Nearly allied to Lonomia. Male.— Body slender. Proboscis 

 obsolete. Palpi porrect, moderately long, extending as far as the 

 head ; second joint more than twice the length of the first ; third 

 minute, short-conical. Antennae moderately pectinated, not longer 

 than the thorax. Abdomen extending to about two-thirds of the 

 breadth of the hind wings. Legs rather short, moderately pilose ; 

 hind tibiae with two small apical spurs Wings very broad. Fore 

 wings very slightly convex along the costa, forming a slightly acute 

 angle at their tips, slightly oblique along the exterior border; 

 interior angle rounded ; three inferior veins ; second much further 

 from the third than from the first. Hind wings with the interior 

 angle more defined than that of the fore wings. 



1. Periga circumstans. 



Mas. Pallide lutea, subtus flava ; antenna testacea ; ala nigro 

 conspersa, nigro trifasciata ; antica nigro biguttataz aut 

 uniguttata. 



Male. Pale luteous, pale yellow beneath. Antennae testaceous. 

 Wings thinly covered with minute blackish specks, with a curved 

 blackish band at one-fourth of the length, with a straight blackish 

 band which extends from the tip of the fore wing to the middle of 

 the interior border of the hind wing (this band is bordered with yel- 

 low on its inner side), and with a diffuse irregular blackish band 



2 o 3 



