34 Trans. Acad. Sci. of St. Louis. 
(7) The number of days spent in ovipositing and the num- 
ber of eggs deposited each day. 
Notes from observations on four fertilized females. 
KNOWN AS DAYS EGGS DEPOSITED 
Al 3 
A383 3 
A4 4 
Abd 3 
ON PONE SCN WNhh 
—_ 
_ 
~l] 
21 
In three out of four instances the eggs were deposited 
in three days; in the fourth instance oviposition consumed 
four days, but on the fourth day only a very few eggs were 
deposited. In three cases out of four we find the greatest 
number of eggs deposited on the first day, in the fourth 
case on the second day. In every instance the smallest 
number were deposited on the last day. 
IV. THe Revation oF THE Duration oF Lirz, tHe Rewa- 
TION OF THE TIME SPENT IN CoPULO, AND THE RELA- 
TION OF THE AGES OF PARENTS AT THE TIME OF 
CoPpuULATION TO THE NUMBER oF Eiaes 
| RETAINED at DeEatH. 
(a) The relation of the duration of life of unfertilized 
females to the number of eggs retained at death. 
Notes derived from observations in four instances. 
KNOWN AS DURATION OF LIFE NUMBER OF 
EGGS RETAINED 
B5 7 days 30 min. 201 
Bl 8 days 175 
B la 8 days 4 
B 2a 9 days 0 
The above figures apparently show that there is a rela- 
tion between a long life and perfect oviposition, and a 
short life and imperfect oviposition. We shall see later, 
