H. E. Crampton 
123 
The two characters of total length and weight are available in considering 
elimination of this period. It will be seen that beside the enquiry into the 
manifestation of selection of type and variability at metamorphosis, much 
additional interest arises when the relation between the selective effects of the 
two different periods of elimination is examined. Treatment of this period must 
therefore be two-fold. 
TABLE VI. 
Pupal-Imaginal Period. Selection in Type. Males. 
Character 
Mean. 
Survivors, 
Perfect 
Mean. 
Survivors, 
Imperfect 
(5) 
Difference 
(0 
Error of 
Difference 
Proportion 
of 
5 : e 
Selection 
Length 
Weight 
26-9329 ± -0822 
1-9464 ±-0154 
27-0137 + -1493 
1-9 190 ±-0307 
-0-0808 
+ 0-0274 
0-1704 
0-0343 
< e 
< e 
None 
None 
Bust, Length 
18-3443 ±-0482 
18-1190±-1027 
+ 0-2253 
0-1134 
> le 
n -1 1 (almost 
Possible {probable 
Possible 
None 
Probable 
Probable 
„ Width 
„ Depth 
„ Frontal Proportions 
,, Sagittal „ 
10-8856+ -0375 
12 0506 + -0345 
59-4691 ±-1503 
65-7257 ±-1355 
10-9702 + -0639 
12-0379 + -0632 
60-2567 + -2590 
66-3648 ±-2475 
-0-0846 
+ 0-0127 
-0-7876 
-0-6391 
0-0740 
0-0720 
0-2996 
0-2821 
> le 
< € 
> 2e 
> 2e 
Left Antenna, Length ... 
Width ... 
„ „ Proportions 
11-3896 + -0299 
4-6908 + -0148 
41-3351 ±-1359 
11-2514+ -0577 
4-6676 + -0326 
41-6089 + -2416 
+ 0-1382 
+ 0-02.32 
- 0-2738 
0-0649 
0-0358 
0-2771 
> 2e 
< e 
< e 
Probable 
None 
None 
TABLE VII. 
Pupal-Imaginal Period. Selection of Variability. Males. 
Character 
Standard Deviation. 
Survivors, Perfect 
standard Deviation. 
Survivors, Imperlect 
Difference 
(e) 
Error of 
Difference 
Proportion 
of 
5 : £ 
Selection 
Length 
Weight 
1-2006 + -0581 
0-2259 ±-0109 
1-3465 + -1056 
0-2769 ±-021 7 
-0-1459 
-0-0510 
0-1205 
0-0242 
> le 
> 2e 
Possible 
Probable 
Bust, Length 
„ Width 
„ Depth 
„ Frontal Proportions 
„ Sagittal „ 
0-7032 ± -0347 
0-5482 + -0265 
0- 50.?4±-0243 
2- 1939 ±-1063 
1- 9768 ±-0957 
0-9265 + -0726 
0-5765 + -0452 
0-5701 + -0447 
2-3348 + -1831 
2-2320 ±-1750 
- 0-22.33 
-0-0283 
-0-0667 
-0-1409 
-0-2552 
0-0804 
0-0523 
0-0508 
0-2117 
0-1994 
>2e 
< e 
> le 
< e 
> le 
Probable 
None 
Possible 
None 
Possible 
Left Antenna, Length ... 
Width ... 
,, „ Proportions 
0-4375 ±-0211 
0- 2173 + -0105 
1- 9828 ±-0960 
0-5289 ±-0408 
0-2941 + -0230 
2-1783±-1708 
-00914 
-0-0768 
-0-1955 
0-0459 
0-0252 
0-1959 
> le 
>3e 
< e 
Possible ^^T'ki 
(probable 
Certain 
None 
16—2 
