BY THE WAY. 297 



on basal area, and the latter represented by blackish marks ; sub- 

 terminal line whitish, serrate, inwardly edged with blackish ; a 

 blackish spot at end of the cell, its inner edge black ; three black 

 bars on outer area towards costa, and two similar bars near dorsum, 

 are interrupted by the whitish subterminal line. Hind wings whitish, 

 mottled with brownish except on costal area ; discal dot blackish ; 

 postmedial line indicated by dusky dots ; a blackish dot at tornus 

 and one beyond it on dorsum. Under side whitish, the dark markings 

 somewhat as above on the fore wings, but discal dot and postmedial 

 line of hind wings more distinct than on the upper side. 

 Expanse, 37 mm. 



Collection number, 805. 



A male specimen from Eantaizan (7500 ft.), May 11th, 1909, 

 and a female from Arizan (7500 ft.), September 11th, 1906. 

 Allied to A. eurydiscaria, Hampson. 



Episopthalma taiivana, sp. n. 



(? . Green, with an ochreous ringed blackish spot on each wing ; 

 antemedial line of fore wings rather darker, inwardly edged with 

 paler, crenulate ; postmedial line darker, outwardly edged with 

 paler, almost whitish, serrate ; traces of a pale crenulate subterminal 

 line. On the hind wings there is a serrate, curved line beyond the 

 discal spot, this is blackish towards costa ; the costal area tinged with 

 pinkish brown from line to base of the wing. Fringes pinkish brown, 

 preceded by darker crenulate line. Under side leaden grey, all wings 

 with dusky postmedial line ; costa of fore wings ochreous. 



5 . Similar to the male, but the edges of transverse lines whiter. 



Expanse, ^ 46 miUim., ? 48 millim. 



Collection number, 1547 a. 



One example of each sex from Kanshirei (1000 ft.) ; the male 

 captured May 2nd, and the female July 10th, 1908. 



This species is very like Chlorodontopera chalybeata, Moore, 

 but the antennae are almost simple in both sexes ; the margins 

 of the wings are less crenulate, especially those of the fore 

 wings. 



BY THE WAY. 



Since Spence wrote Letter xxv. of the ' Introduction to 

 Entomology,' we can recall no claim made to igiies fatui as an 

 entomological subject. He distinctly states, however, his ex- 

 pectation that luminous insects would be discovered to be the 

 explanation of the phenomenon, and regards the phosphureted 

 hydrogen theory as impracticable on account of the light's 

 erratic and local movements in a high, steady breeze. Per- 

 sonally, we have (with Wailes) vaguely supposed it to be " the 

 spontaneous ignition of gaseous particles " given off by decaying 



ENTOM. — SEPTEMBER, 1911. Z 



