DINODERUS MINUTUS. 173 
common in the Bombay Presidency where it is said to be 
plentiful in houses from December to February flying slowly 
about (H. E. Andrewes). There should therefore be no great 
difficulty in working out its life history in that Presidency. 
This is of some importance since it may turn out that bamboos 
are subject to the attacks of the borers throughout the year 
on the Bombay side if Dénoderus pilifrons and D. minutus 
are equally plentiful. It has been found boring into bamboo in 
Guadaloupe, in the dry roots of Smzlax borbonica inthe Island 
of Réunion and in lianas from Brazil in which cotton had been 
packed. 
Localities from where reported. 
Lesne states that this beetle is cosmopolitan in tropical 
regions. It is the commonest species of the genus and is at 
times found in ports and large towns in temperate climates, 
As I have said, Andrewes reported it as very common in 
the Bombay Presidency. 
Relations to the Forest, ete. 
The same remarks apply as given for D. pilcfrons. 
The remarks with reference to the best time for cutting may 
require modification in Bombay for this beetle. It is not 
possible to make any definite statement, however, until its 
- life history has been worked out. 
Points in the life history requiring further observation, 
1, The number of generations in the year. Since the 
beetle is found onthe wing from December to 
February, during the colder months, andsince it 
has such a wide spread, it is not improbable that 
the number of life cycles passed through ina year 
are very large. 
2. Length of time spent in the various stages of egg, 
larva, pupa and beetle in the different life cycles. 
3. The different food-plants of the insect. 
4. Does the beetle attack sickly still-green trees, etc., 
or does it only infest dry dead plants ? 
