13G NOCTriD.E. 



extremity. Fore wing bright ochreous, with traces of pale subbasal, antemedial, and medial 

 waved lines ; a white dot beyond the end of the cell ; a more distinct waved and strongly 

 excurved postmedial line ; a waved submarginal line, strongly blotched with black towards the 

 outer angle ; the tufts of scales on inner margin black ; some white dots on the costa 

 towards the apex. Hind wing uniform pale fuscous. 



Helia tesseUata. (Plate CLXVIII. fig. 18.) 



Expanse 1^ inch. 



Male. Head, thorax, and fore wing whitish ; the last with a black patch at the base of 

 the costa ; an irregular black antemedial band, narrow in the cell and at submedian nervure ; 

 a postmedial waved black band, expanding into a large patch in and beyond the cell, and 

 enclosing a pale streak on the discocellulars ; a black patch on the costa before the apex with 

 two white strigfe on it ; a series of marginal black luuulcs with dusky patches at middle of 

 outer margin and outer angle. Abdomen and hind wing suffused with fuscous; the latter 

 with traces of medial and marginal lines. Cilia chequered brown and whitish. X^nderside 

 suffused with smoky black ; hind wing with a spot at end of cell and postmedial maculate 

 line. 



Helia pancimaculata. (Plate CLXVIII. fig. 16.) 



Expanse 1^ inch. 



Male. Difl'ers from H. tesseUata in having tlic head, thorax, and fore wing suft'ased with 

 ochreous ; the antemedial band of the last reduced to a small spot on the costa, the remainder 

 being obsolescent ; an additional spot in centre of cell ; the black expansion of the post- 

 medial band much reduced in size, the remainder of band obsolescent ; a marginal series of 

 black specks, not lunules, and the dusky patches absent ; cilia of both wings uniform pale 

 brown. Abdomen with a black spot at base ; fore femora black. 



ARjEOPTEKON, g. n. 



Male. Antennae simple. Palpi upturned, slender, and short. Fore wing with a costal 

 nervure ; the third subcostal from before the end of cell, giving oft' the first and second on 

 one side, and the fourth on the other ; the fifth subcostal from end of cell and widely sepa- 

 rated from the third ; upper radial from the middle of the discocellulars ; lower radial and 

 second and third medians, which are stalked, from the lower angle of cell; the first median 

 from before the end ; a submedian nervure. Hind wing with the costal given off from the 

 subcostal near the base ; the two subcostals stalked; radial from the middle of the disco- 

 cellulars; second and third medians from the lower angle stalked ; the first from before the 

 end of cell ; submedian and internal nervurcs. 



