212 Mr. HE. Meyrick on the 
amount of generic also; and (2), a smaller portion, the 
descendants of various stray immigrants from other 
regions round, mostly of later date, yet sometimes 
admitting of much specifie modification. Immigration 
of this kind appears, from the great remoteness of these 
islands, to have been exceedingly scanty. 
PYRALIDID. 
1. Asoria, J'r. 
1. Asopia gerontialis, Walk. 
Pyralis achatina, Butl., Ent. Mo. Mag., xiv., 49. 
I have given the full synonymy in earlier papers. 
This species occurs also in North-east Australia, Celebes, 
Java, Ceylon, and West Africa, and probably throughout 
the tropical regions of the Old World; it appears to take 
the place of the closely-allied A. farinalis, which is 
widely spread through the temperate regions of both 
hemispheres, but has not been recorded within the 
tropics. Both species have been undoubtedly carried 
throughout their range by human agency, and their 
original home is now uncertain. 
HYDROCAMPIDA. 
2. Paraponyx, [b. 
2. Paraponysx linealis, Gn. 
Paraponyx linealis, Gn., 271; Oligostigma chrysippu- 
salis, Walk., 482; O. obitalis, ib., 482; O. curta, 
Butl., Ent. Mo. Mag., xv., 270. 
Also from Australia (according to Walker), Celebes, 
Sumatra, Java, China, India, Ceylon, and South Africa. 
Butler’s type of Oligostigma curta differs from ordinary 
specimens only in having the ante-median dark line of 
hind wings somewhat protuberant in middle, so as to 
touch the dark margin of the following yellow band, 
and is certainly not specifically distinct. The larva is 
doubtless aquatic, like the rest of the genus, and it 
seems hardly probable that the species can have been 
transported to any extent by man; but in the absence 
of precise information as to its habits, it is useless to 
conjecture the cause of its immense geographical range. 
There must be some exceptional circumstance; with the 
exception of 1. nitens (common to Australia and New 
