42 CRYPTORHYNCAUS SP. 

Life History. 
The flight time of this weevil is about the beginning of De- 
cember at which time all the stages of larva, pupa, and adult 
beetle may be found beneath the bark of the host plant. 
The larve were found just beneath the bark of young 
Pinus Khasya trees. They apparently feed on the cambium 
layer and grow to full size here and then gnaw out a cavity in 
the wood, line it with wood chips, and change into the pupal 
state within this little cell. These cavities were invariably 
found tobe packed with fresh moist wood chips or ‘ wood wool’ 
when they contained larve, whereas in those containing mature 
or nearly mature adult beetles the wood wool was found to be 
dry and yellow. When the weevil is ready to issue, tt bores a 
fresh hole straight through the bark of the sapling and crawls 
out. . 
This is all that is at present known about the life history of 
this pest. Observations on the subject for the other eleven 
and a half months of the year are required. 
Locality from which reported. 
This beetle was reported in December 1901 from a_planta- 
tion in Maymyo, Upper Burma. 
Relations to the Forest. 
The attacks of this weevil were pointed out to Mr. Long, 
whilst inspecting an experimental plantation of Pzwus Khasya 
by Mr. D. A. Allan, Ranger, Numerous trees, five years 
old, were seen to be dying. In some cases these trees were 
suppressed by their neighbours, in others the dominant trees 
themselves were dying. On felling and examining one of the 
latter, the various stages of the beetle were found in abundance, 
Most of the larvz were already full fed and had left the bark 
and were ensconced in cavities in the wood of the saplings, these 
cells having been generally bored within a foot of the ground 
and never, as far as was observed, more than two feet above 
the surface of the soil, 
1 The notes here given on the life history of this pest, together with larva, 
pupa and adult beetle, were forwarded to me in December 1g01 by Mr. G.R. 
Long, Personal Assistant to the Conservator of Forests, Southern Circle, 
Upper Burma. 
