62 TRABALA VISHNU. 

thickly irrorated with black occupying the whole medial inner 
area from the median nervure to inner margin ; cilia of both 
wings blackish. 
Expanse of wings ¢ 50—60; ? 80—go millim. 
Hampson gives the habitat as China, throughout India, 
‘Ceylon, Burma, and Java. 
Life fHistory, etc. 
In Assam the larva of this moth is to be found in the sal 
forests during April-May, and apparently does a certain amount 
of defoliation. The moth appears on the wing in June and was: 
sent to the Indian Museum in 1898 from the sdl-areas near 
Dubri where it was defoliating the trees in company with Zy- 
mantria grandis. No further accounts of this insect’s life in the 
forest are at present available. It is probable that there will be 
at least one other generation of the insect during the year 
about August September. . 
This adds one more to the lengthening list of s4l defoliating 
Heterocera, and observations are required as to which of the 
species are reponsible for most of the damage done. 
Potnts in the life history requiring further observation. 
1. Where the eggs are laid. Are they laid on the sal 
twigs? 
2. The time spent in the larval stage. 
3. The time spent in the pupal stage. 
4. The number of generations in the year. If more than 
one, the times spent in the various stages of each 
generation. . 
5. Where the insect spends the winter, and in whick 
stage of its metamorphosis. 
