856 
type. In the end, it is of the same nature as specific differentiation 
in general. 
So in Hepialus humuli the white masculine form has evidently 
lost the primitive specifie livery, which is still preserved by the 
female and by the Shetland-male. | 
Though in general my opinions on these subjects disagree with 
those of Haase, I feel much satisfaction in making the following 
quotation from the concluding passage of his “Resumption” (p. 112) : 
“The mimetic transformation was preceded in most cases by atavistic 
phenomena from the side of the females, which in the beginning 
reached back to the patterns of the nearest relatives, but as the 
process proceeded, passed over to those of more distanced forerunners 
and in this way procured the material for the mimetic adaptation’. 
So Haase attributes the uniforms of mimetic females to hereditary 
influences, instead of considering them as the consequence of BERDE 
deviations from the primitive specific type. 
Groningen, Nov. 1920. 
