332 Proceedings of Royal Society of Edinburgh , [sess. 
find eggs, young larvae, full-grown larvae, pupae, and imagos; and the 
danger of generalising in absence of a complete experiment is 
further emphasised when I state that I had feeding side by side 
in the autumn, representatives of three generations of imagos in 
direct descent, born in 1895, 1896, and 1897 respectively, and 
among these feeding imagos could be numbered beetles which had 
issued from my various pines in every month of a year except 
January, February, March, and December. 
Here is a table showing the times when eggs were laid in the 
course of the experiments. 
Tables of Times of Egg-laying. 
Year. 
No. of 
Pine. 
Length of time Notatus was 
allowed to remain on Pine. 
Proof that Eggs were 
laid. 
1896 
1 
End of March and beginning 
of April 
A new brood issued. 
9 9 
2 
April 17 onwards 
9 9 9 9 
1897 
12 
April 15- May 10 
9 9 9 9 
Got larvae on dissection. 
9 J 
14 
April 21-May 29 
9 9 
15 
May 1-May 29 
A new brood issued. 
9 9 
16 
May 10-May 25 
9 9 9 9 
17 
May 25-June 3 
9 9 9 9 
99 
19 
May 29- June 30 
9 9 9 9 
9 9 
20 
June 3-June 29 
9 9 9 9 
Larvae got on dissection. 
9 9 
27 
June 29- July 10 
9 9 
29 
June 30-July 28 
9 9 9 9 
99 
31 
July 10-July 28 
9 9 9 9 
9 9 
32 
July 12- August 2 
9 9 9 9 
9 9 
35 
July 17-July 31 
9 9 9 9 
99 
36 
July 28-August 9 
9 9 9 9 
99 
37 
July 31-August 14 
9 9 9 9 
39 
August 2- August 16 
9 9 9 9 
9 9 
40 
August 9- August 27 
99 9 9 
99 
41 
August 14-August 28 
9 9 9 9 
9'9 
45 
August 27-September 29 
9 9 9 9 
1898 
46 
August 28-October 1 
9 9 9 9 
55 
March 14-April 20 
A new brood issued. 
9 9 
56 
March 23-April 22 
9 9 S’ 
Larvae got on dissection. 
9 9 
57 
April 9-May 28 
9 9 
58 
April 20-May 10 
A new brood issued. 
9 9 
61 
May 10-May 27 
Larvae got on dissection. 
62 
May 27-June 22 
Pupae „ „ 
9 9 
63 
May 27-June 29 
A new brood issued. 
64 
June 22-July 11 
Larvae got on dissection. 
9 9 
65 
June 29-July 21 
9 9 9 9 
99 
66 
July 11-August 29 
9 9 9 9 
99 
67 
July 26-August 31 
9 9 9 9 
The months of the year in which new imagos have issued from 
their beds after pupation will be seen from the next table. 
