H. E. Crampton 
121 
TABLE V. 
Pupal Period. Selection in Variability. Females. 
Character 
Standard 
Deviation ; 
Survivors 
Standard 
Deviation ; 
Dead 
Difference 
Error of 
Difference 
Proportion 
of 
5 : e 
Selection 
Bust, Length 
0-7150 + -0257 
0-8826 + -0313 
-0-1676 
0-0399 
>4c 
Certain 
„ Width 
0-5477 + -0196 
0-6731 + -0239 
-0-1254 
0-0309 
>4f 
Certain 
„ Depth 
0-5643 + -0202 
0-6567 + -0233 
- 0-0924 
0-0308 
= 3e 
Certain 
„ Frontal Proportions 
1-8770+ -0674 
2-1468 + -0763 
- 0-2698 
0-1018 
>2e 
Probable 
„ Sagittal „ 
1-8230 ±-0655 
2-1535 ±-0765 
-0-3305 
0-1007 
>3e 
Cei'tain 
Left Antenna, Length . . . 
Width ... 
„ „ Proportions 
0-4711 + -0169 
0- 2009 + -0072 
1- 9703 + -0708 
0-6177 + -0219 
0- 2517 + -0089 
1- 7387 + -0618 
-0-1466 
-0-0508 
+ 0-2316 
0-0276 
0-0114 
0 0939 
> 5e 
>4€ 
>2. 
Certain 
Certain 
Reversed 
One additional fact may be noted, which is that the type selection in the 
characters of the surviving females is in all cases in the same direction which it 
takes in the male sex. This correspondence is of decided significance. 
Fig. 2. Selection in Type. Pupal Elimination, Females. 
Left Antenna Lencfth {mm.). 
8.6 
8.9 
9.2 9.6 9.8 10,1 
\0A 
10.7 
WD 
113 
11.6 11.9 
122 
12.5 
12.8 
Total 
All Pupae 1 
0 
0 2 0 3 
12 
23 
41 
65 
86 65 
42 
14 
2 356 
Survivors 
2 
7 
16 
33 
47 37 
21 
12 
1 176 
