Rau—Observations on Samia Cecropia, Linn. 35 
however, in the fertilized females, where observations 
were made on a greater number of moths, that there is no 
relation between a long life and perfect oviposition, and 
a short life and imperfect oviposition. Were observa- 
tions made on a larger number of unfertilized females, the 
results, no doubt, would lead to similar conclusions. 
(b) The relation of the duration of life of fertilized 
female to the number of eggs retained at death. 
Notes derived from observations in seven instances. 
KNOWN AS _ DURATION OF LIFE NUMBER OF 
DAYS HOURS EGGS RETAINED 
A 8 9 19:30 98 
A 9 9 4:30 4 
A 10a 8 16:30 14 
A 4 7 21:50 125 
A 15 7 18 0 
A 12 7 7 55 
A 10 6 16 0 
The figures show that there is absolutely no relation 
between a long life and perfect oviposition and a short 
life and imperfect oviposition. Here we see imperfect 
oviposition in a long life, perfect oviposition in a short 
life, and vice versa. 
(c) The relation of time spent in copulo to the number 
of eggs retained. 
Notes made from observations in twelve instances. 
KNOWN AS TIME SPENT NUMBER OF 
DAYS HOURS EGGS RETAINED. 
Bosh 1 5:15 45 
A 8 1 0:30 98 
A 5 1 0 112 
A ll 1 0 0 
A 10 0 23:30 0 
A 10a 0 23:30 14 
A 3 0 23:30 61 
A 14 0 22:30 125 
A 12 0 17:30 | 55 
A 9 0 12 4 
A 15 0 10:30 0 
A 4 0 8:30 91 
The above figures show that there is no relation be- 
tween a longer or shorter period of copulation and per- 
fect or imperfect oviposition. In some cases we see a 
