SINOXYLON CRASSUM. 1) 

lay their eggs in these trees in preference to attack: 
ing green ones, The trees should be felled in May, 
cut up and burnt. In June another set of trees 
should be similarly prepared to catch the second 
generation of beetles, this second lot being ‘cut 
down and burnt about the end of August. 
Careful watching will show whether it is necessary to 
repeat this treatment the next year. 
Points in the life history requiring further observation. 
1. Where does the insect pass the winter, and in which 
stage, egg, larva, pupa or imago? 
2. The number of generations passed through during the 
year. It will probably vary in different parts of 
India, 
3. The number of eggs laid by the 2 and method of 
laying them. 
4. Description of larva and its method of feeding. 
The Sissu billets examined were so terribly riddled by 
the beetles, etc., that my notes on the way in which the eggs 
are laidand the manner of feeding of the larval require corro- 
boration. 
