H. E. Crampton 
125 
practical certainty, while as a result of the earlier pupal elimination the survivors 
were found to be the more slender in both characters. Equally anouialous are the 
facts relating to the antennal characters. A rigid selection is indicated in that the 
perfect ones have much shorter antennae, and as these are about the same in width 
in the two groups, a strong selection is shown in antenna proportions, the stouter 
organs being characteristic of the perfect pupae. 
TABLE VIII. 
Pupal-Imaginal Period. Selection in Type. Females. 
Character 
Mean. 
Survivors, 
Perfect 
Mean. 
Survivors, 
Imperfect 
(5) 
Difference 
(^) 
Error of 
Difference 
Proportion 
of 
5 : e 
Selection 
Length 
30-0595 ±-1087 
30-4239 ± -0727 
-0-3644 
0-1307 
> 2e 
Probable 
ahnost 
probable 
Weight 
2-8571 ±-0257 
2-9173 ±-0223 
-0-0602 
0-0340 
> le 
Possible 
Bust, Length 
„ Width 
„ Depth 
19-3309+ -0563 
12- 5750 + -0432 
13- 5691 ±-0437 
19-6620+ -0440 
12- 6131 + -0347 
13- 6294 ±-0373 
-0-3311 
- 00.381 
-0-0603 
0-0714 
0-0576 
0-0745 
> 4e 
< e 
< € 
Certain 
None 
None 
jalmost 
(certain 
„ Frontal Proportions 
64-8690 ±-1380 
64-3044 ±-1296 
+ 0-5646 
0-1892 
> 2e 
Probable 
„ Sagittal „ 
70-0952 ±-1351 
69-4783 ±-1239 
+ 0-6169 
0-1833 
> 3e 
Certain 
Left Antenna, Length ... 
Width ... 
„ „ Proportions 
11 -5500 + -0362 
4-3143 + -0152 
37-4631 + -1511 
11-7271 + -0305 
4-3218 + -0151 
36-8152 + -1114 
-0-1771 
- 0-0075 
+ 0-6479 
0-0474 
0-0214 
0-1877 
> 3€ 
< e 
> 36 
Certain 
None 
Certain 
TABLE IX. 
Pupal-Imaginal Period. Selection in Variability. Females. 
Character 
Standard Devi.ation. 
Survivors, Perfect 
Standard Deviation. 
Survivors, Imperfect 
(«) 
Difference 
Error of 
Difference 
Proportion 
of 
6 : e 
Selection 
Length 
Weight 
1-4748 + -0714 
0-3499 ± -0182 
1-0345 + -0514 
0-3178 ±-0158 
+ 0-4403 
+ 0-0321 
0-0879 
0-0241 
> 56 
> If 
Reversed 
Reversed 
Bust, Length 
„ Width 
„ Depth 
„ Frontal Proportions 
„ Sagittal „ 
0-7641 + -0397 
0-5869 + -0305 
0- 5933 + -0308 
1- 8721 + -0974 
1-8330 ±-0953 
0-6265 + -0311 
0-5086 + -0252 
0- 5317 + -0264 
1- 8429+ -0916 
1-7630 ±-0876 
+ 0-1376 
+ 0-0783 
+ 0-0616 
+ 0-0292 
+ 0-0700 
0-0504 
0-0395 
0-0407 
0-1337 
0-1294 
> 26 
> If 
> l6 
< 6 
< 6 
Reversed 
Revei'sed 
Reversed 
None 
None 
Left Antenna, Length ... 
Width _ ... 
„ „ Proportions 
0-4919 + -0256 
0-2070+ -0107 
2-0498 + -1066 
0-4339 + -0215 
0- 2149 ±-0106 
1- 5844 ±-0788 
+ 0-0580 
-0-0079 
+ 0-4654 
0-0334 
0-0150 
0-1325 
> l6 
> l6 
>36 
Reversed 
Possible 
Reversed 
