THE CADELLE 15 
Table 1. — Data concerning longevity and oviposition of the female cadelle 
Fe- 
male 
No. 
Date emerged 
First egg 
laid 
Preovi- 
position 
period 
Length 
Last egg of ovi- 
laid position 
period 
Number 
of eggs 
laid 
Date of death 
Length 
of life 
1 
0) 
0) 
G) 
Aug. 7,1922 
do 
do 
Aug. 11,1922 
.....do 
Aug. 8, 1922 
Aug. 12,1922 
Aug. 19,1922 
Aug. 20,1922 
Aug. 22, 1922 
Sept. 28, 1922 
July 1, 1922 
do 
do 
Aug. 22,1922 
do 
do 
Aug. 27,1922 
Aug. 26,1922 
Aug. 28,1922 
Feb. 9, 1923 
Sept. 18, 1922 
Feb. -27, 1923 
Mar. 20, 1923 
Mar. 3,1923 
Days 
; Days 
Sept. 13, 1922 74 
530 
1,190 
436 
1,311 
597 
1,087 
990 
931 
493 
1,319 
987 
1,182 
916 
757 
Sept. 24, 1922 
Dec. 2, 1922 
Nov. 28, 1922 
Mar. 14, 1924 
Mar. 28, 1924 
Dec. 31, 1923 
Nov. 10, 1923 
Feb. 20,1924 
June 6, 1924 
July 23,1923 
Feb. 23,1924 
Jan. 11,1924 
Apr. 10,1924 
Jan. 29,1924 
Days 
122 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
13 
14 1 
is" 
15 
15 
16 
15 
20 
181 
30 
191 
210 
156 
Oct. 15,1922 
Aug. 28,1922 
Sept. 8,1923 
Aug. 8, 1923 
Oct. 20,1923 
Aug. 2, 1923 
Sept. 17, 1923 
Aug. 13,1923 
July 14,1923 
Sept. 12, 1923 
Oct. 15,1923 
Sept. 9,1923 
Oct. 7, 1923 
106 
58 
382 
351 
424 
340 
387 
350 
155 
359 
230 
173 
218 
191 
187 
585 
599 
511 
456 
558 
668 
345 
553 
509 
597 
488 
Emerged prior to May 15. 
WHERE EGGS ARE LAID 
Previously published accounts give little information regarding 
the egg-laying habits of the cadelle. The adults deposit their eggs 
loosely in flour or other food materials, or tuck them into crevices of 
any sort. They prefer to place them in some protected situation, 
such as beneath insecurely pasted flaps of cartoned goods, in corru- 
gated cardboards, through the mesh of fabric used as containers 
for flour or grains, and in floor cracks. The eggs are placed side by 
side in batches containing usually from 10 to 60 each, although as 
few as four eggs, and as many as 91, have been found in a single 
batch. The average number of eggs placed in a batch is 25 (see 
Table 2). In securing eggs, advantage was taken of the female's 
preference for oviposition in crevices by offering her small pieces of 
sheet cork fastened together with paper clips and placed on top of 
the food in the jar in which she was kept. The beetle invariably 
placed her eggs in batches between the sheets of cork, hence it was a 
simple matter to change the cork daily and record the eggs laid. 
The reader should refer to Figure 11 for photographic records of the 
manner of oviposition in crevices. In ovipositing into flour, through 
a cloth covering, the eggs are arranged in many planes. 
PERIOD OF OVIPOSITION 
With the presentation of the data of Table 2, the writers are able 
to give for the first time authentic information concerning the pe- 
riod of oviposition of the cadelle. 
It will be noted that oviposition, in one instance (Xo. 6), be^an 
August 22, 1922, and ended October 20, 1923. This record, extending 
over a period of almost 14 months, is the longest known. Other 
recorded periods of approximately a year's duration were from 
August 22 to September 8 (Xo. 4), August 22 to August 8 (Xo. 5), 
August 27 to August 2 (Xo. 7), August 26 to September 17 (Xo. 8), 
August 28 to August 13 (Xo. 9), and September 18 to September 12 
(Xo. 11). In these seven instances (see Table 2) no eggs were laid 
during the period from September 20 to February 7, inclusive : and 
in four of the seven records, none until March 2: in two instances 
