SINOXYLON ANALE. . 17 


three secondary egg galleries take off. In small billets these 
may be found at all depths. The eggs are laid at the sides of - 
these galleries, the female blocking up the notches in which they 
are laid and the gallery itself with sawdust. Larvee were found 
in all stages of growth in the third week of April and pupe 
between this and the end of the month. In May and June 
beetles have been reported as active, they being those of the 
first generation. Fully mature beetles also again appear in 
September, disappearing according to Mr. B. O. Coventry in 
October, The writer has found beetles issuing from Changa 
Manga Sissu billets in November. There would therefore seem 
to be a probability of there being three generations of this 
insect in the year. The pest probably hibernates through the 
winter in the larval stage or as a beetle, coming out and laying 
its eggs in fresh trees and cut wood in April. 
Localities from which reported. 
In 1897 I found this insect attacking sal logs and sickly 
trees from March well on into June in Chota Nagpur. In Octo- 
ber 1899 Bostrichid beetles were reported by Mr, B. O. Coventry 
from Changa Manga and in April 1go1, I ascertained that 
ene of them was S. amale, it occurring also plentifully at 
Shadhera. The following further note on the distribution is 
given by Mr. P. Lesne:— 
Bombay Presidency. Belgaum, taken at light in March, 
April, and also beneath old bark (Andrews); Canara, found in Xylia | 
dolabriformis, Benth. and in Shisham(Dalbergia lattfolia, Roxb.) 
(T.R. D. Bell) ; Burma (G, Q. Corbett). Mr. Bell has observed 
this species boring into the bark of the above mentioned trees 
and then mining out beneath the bark a longitudinal gal- 
lery ; the female chooses dead trees, the wood of which is not 
quite dry. Mr. Bell has found the male and female in the same 
gallery in March. 
Relations to the Forest. 
The action of this pest in the forest is very similar to that 
of S. cerassum described above. It is probably the greater 
pest of the two, since it will attack drier wood than its ally. 
Owing to this habit it remains burrowing into billets and 
timber for some time after they have been deserted by S. crassum 
Cc 
