124 TJie hilieritmice of Wing -Colour in Lepidoptera 



As it was intended later to carry out experiments with var. varleyata 

 and the well-known pale variety, lacticolor, some individuals of the 

 latter variety were used in certain pairings, with the result that both 

 lacticolor and a completely new variety, with an exceedingly handsome 

 facies, appeared among the F.^ offspring. The genetics of this variety, 

 named var. exquisita, Raynor^ will be dealt with in a future communi- 

 cation. Owing to the occurrence of these varieties, the material in the 

 following tables has been classified into melanic and non-melanic, in 

 order to reduce the number of columns. 



The result of mating varleyata with non-melanic, that is to say, 

 ordinary wild insects or lacticolor, was as follows : 



Total 



178 



It is seen that the black variety is recessive both to type and to 

 lacticolor. The amount of the black pattern in F^ individuals appears 

 to vary very considerably, but this point will be dealt with later. 

 Whether lacticolor is heterozygous for varleyata or not, the variation in 

 the amount of black is usually scarcely noticeable. 



1 Eaynor, G. H., Ent. Rec. Vol. xxi. No. 11, p. 205, November 1919. It is possible that 

 the variety named albovarleyata by Porritt [Ent. Rec. Vol. xxix. p. 136, 1917) is exquisita, 

 but in answer to some inquiries Mr Porritt says that this form was bred from stock which 

 never contained a single specimen of lacticolor ; in fact, he had never bred the latter 

 variety. Moreover, although the resemblance is close, there appeared to be some slight but 

 significant difference in the appearance of the black shoulder -knot on the under surface. 



* This varleyata ^ was radiated (see p. 136). 



