234 
Bionomics of Fediciilus 
No. of 
observa¬ 
tion 
Paper Distribution 
(black or of lice on 
white) the paper 
No. of 
observa¬ 
tion 
Paper Distribution 
(black or of lice on 
white) the paper 
1 
a 
(1 
a 
1 
Black ^ 
0 
h 
9 
Black 
b 
1 
u 
c 
1.7 
c 
ro 
a 
I 
a 
2 
White 
l6 
b 
10 
White 
3 
h 
1 
c 
1 
Ig 
c 
1 
a 
ro 
a 
3 
Black \ 
b 
11 
Black 
b 
1 
is 
c 
1 
I 9 
c 
Totals 
1 
a 
1 
a 
1 
r 9 = 13% 
a 
4 
White 
b 
12 
White ] 
0 
b 
Black 
6= 8% 
b 
1 
ie 
c 
1 
17 
c 
1 
157 = 79 % 
c 
1 
a 
1 
a 
1 
r 6= 9 % 
a 
5 
Black t 
2 
b 
13 
Black \ 
0 
b 
White \ 
19 = 26% 
b 
1 
Is 
c 
1 
IG 
c 
1 
l47=66% 
c 
a 
1 
fO 
a 
C 
White j 
3 
h 
14 
White J 
3 
b 
'.6 
c 
1 
[g 
c 
Black A 1 
a 
1 
fO 
a 
7 
b 
15 
Black 
b 
1 
[8 
c 
1 
Is 
c 
1 
fl 
a 
1 
"2 
a 
8 
White 
2 
b 
16 
White \ 
2 
b 
1 
'g 
c 
1 
^6 
c 
Note, a = lice sluggish and failed to crawl. 
6 = lice crawled to side of the paper. 
c = lice crawled to edge of paper farthest from the source of light. 
Length of life of unfed lice under different conditions 
of temperature. 
Lice at all stages of growth were taken from a stock box carried 
in a vest pocket and submitted to the following conditions: in a room, 
the air of which is very dry owing to central heating, temperature 
16°-18°C.; in a humid incubator at 24-5° C. constant; in a dry air 
incubator at 37° C. constant. 
At 16°-18° C. most oi the insects died within four days; two lived 
five days; one adult was still living on the seventh day. 
At 24-5° C. all died within five days. 
At 36'1° C. all died within three days. 
Newly hatched lice that had not been fed lived less than 24 hours 
xt 36'1° C. When kept unfed in a box in the vest pocket newly hatched 
lice lived but little more than a day; none survived a second day. 
Adults kept in a box unfed in the side pocket of a coat lived five days. 
