FIELD. — INDIVIDUAL VARIATION IN THE LEPIDOPTERA. 393 



Total of measurements of 31 males 



Mean 



Total of deviations 



AD (sexual) 



CV (sexual) 



Total of measurements of 19 females 



Mean 



Total of deviations 



AD (sexual) 



CV (sexual) 



Total of measurements of 50 speci- 

 mens, both sexes 



Mean 



Total of deviations 



AD of species 



CV of species 



Curves of distribution of individual 

 measurements 



Wing Length 

 (Fig. 1, a-b,. 



mm. 



929.6 



29.9 



20.3 

 0.654 

 0.022 

 598.2 



31.5 



13.9 

 0.731 

 0.023 



1527.8 



30.5 



45.3 

 0.906 

 0.030 



Fig. 2 



Wing Breadth 

 (Fig. 1, c-d). 



mm. 

 333.2 



10.7 



10.1 

 0.322 

 0.030 

 213.6 



11.2 

 7.6 

 0.400 

 0.036 



546.8 



10.9 



21.0 

 0.420 

 0.039 



Fig. 3 



The results may be summarized thus : — 



From this table it appears that the length of the sinuous margin has 

 a greater Coefficient of Variability than any of the other dimensions 

 measured, being 



