
A FURTHER NOTE ON SINOXYLON CRASSUM. 165 
Terminaltia tomentosa is a tree of some value in parts of 
India. In the Central Provinces it is in demand for rafters 
etc., used in the construction of bungalows. Whilst in Seoni’ 
in August last year, my attention was drawn to the state 
of the roofs in some newly-built bungalows put up by the 
Bengal-Nagpur Railway. They had the ordinary thatched roof 
so common in the country, the rafters, carrying the superstruc- 
ture of bamboos and thatching grass, consisting of roughly- 
barked Terminalia tomentosa posts. These latter were being 
badly riddled by the Sinoxylon beetle which was egg-laying, 
the floor and furniture beneath being covered with little yellow 
spots of saw-dust dropping from the beetle borings. Mr. C. O. 
Hanson, the Deputy Conservator in charge of the Seoni 
Division, who was my companion at the time, informed me that 
most, if not all, of the roofs of the new bungalows were in a 
similar state, some being very bad indeed. One of these latter 
I was subsequently shown, and the number of beetles at work 
in the roof was very large. Through the courtesy of the 
railway officials, Mr. Hanson was able to send me up one of 
the attacked posts taken from this roof the following month 
(September). The post was sent up in lengths, together with 
some insects cut froma portion of it. Amongst these were 
some 5S. crassum beetles. The insect was egg-laying in Sep- 
tember, both beetles and half-grown larve being found in 
“tunnels in the wood. Under favourable circumstances, some 
of these larve develop into beetles, which issue about the 
beginning of November and hibernate as such through the cold- 
weather, or a portion of the cold-weather, months, 
Protection and Remedtes. 
Bostrichids of this kind do not infest green living trees, 
nor will they attack fresh-cut posts immediately after felling. 
As soon, however, as the sap has begun to dry off a little from 
the post, the bostrichids make their appearance and commence 
boring into the wood for egg-laying purposes. It is immaterial, 
inthe case of these beetles, whether the pole is barked or 
not, as it is the wood, and not the bast layer, which they 
