XV, 4 
Oshima: Formosan Termites 
335 
an important building material, it is classed as a most formidable 
pest throughout Formosa. Moreover, as the method of at- 
tack of this insect is insidious, usually leaving the outer layer 
of wood intact as a protective covering from sunlight and its 
natural enemies, so that the damage is always hidden until 
beyond repair, it is a most dangerous enemy to buildings 
(Plate IV). 
Table IV . — The rate of egg laying, Coptotermes formosanus. 
r 
i Date. 
Eggs. 
Larvffi. 
Total. 
Increase. 
Total. 
Increase. 
May 20® 
May 25 
2 
2 
May 26 
5 
3 
| May 27 
5 
; May 28 
5 
| May 29 
6 
1 
J May 30 
8 
2 
! May 31 
9 
1 
1 June 1 
n 
2 
j June 2 
13 
2 
1 June 3 
14 
1 
14 
15 
1 
! June 7 ... 
15 
■ June 8 
16 
1 
| June 11 
16 
! June 12 __ 
17 
1 
17 
June 15 
18 
1 
1 June 16__ 
19 
1 
June 19 
20 
1 
June 21 
20 
20 
20 
20 
June 27 
17 
3 
3 
June 28 
16 
4 
1 
15 
5 
1 
14 
6 
1 
July 3 
10 
10 
4 
July 5 
6 
14 
4 
July 7 
6 
14 
July 8... 
4 
16 
2 
July 10 
4 
16 
July 11 
3 
17 
1 
July 12 
3 
17 
July 13_ 
0 
20 
3 
167553 2 
* Date of capture. 
