74 [.^Vnl. 



There i;?, therefore, no difference to note between the two forms, 

 but so far as there is any, it is the dark tliat is the earlier. As reo;ar<ls 

 both it appears that the females emerge a day or two earlier than the 

 males. It may also be deduced that the emer'j;eni-es do not ap[)a- 

 rently take place freely, until nature has been refreshed by the 

 downfall that marks the late summer. 



The photoj2;raph of the moths bred presents at a glance the ])ro- 

 portions of the two forms reared from the larvte from each of the 

 localities. They show — 



N. hyerana Ityerana. marginata. 



Les Maurettes 128 118 246 



La Plage 141 28 169 



269 146 415 



In the large number bred in 1906 there is of course a larger 

 number of varieties (aberrations) than I have met with before. In 

 the first place ab. alpha. Mill., is represented by 38 specimens in the 

 shore and by 36 in the hill group, being in each case about half the 

 total number of male specimens of the pale type. It is altogether a 

 male aberration, as no female specimen shows any definite indication 

 of it. Of these 70 odd specimens about seven show the dark dash more 

 markedly on one side than the other, two at least being typical on the 

 one side, ab. alpha on the other. Tli/erana hi/ernna with more or less 

 dark dotting and shading are represented by about 14 from La Plage 

 and 20 from Les Maures amongst ^ specimens ; these are often asso- 

 ciated with the ab. alpha marking, but not by any means always, the 

 commonest form is a dark shading between the veins, wnth scattered 

 dark scales over the whole of the wing, none are of the definitely 

 spotted form nigro-piinctata from Taormina. 



Amongst the females about 18 from La Plage show definite dark 

 shading, but none of this form in any decided degree occurs among 

 the females from Les Maurettes. This is somewhat curious, the males 

 varying in the contrary proportions. The row of black dots along 

 the inner margin is more or less associated with this darkening, but 

 occurs separately, and is a purely ? variation. 



As regards the dark males of type race, it is to be noted that 

 the mass of the specimens had emerged at the end of October, but 

 on November 23rd two males emerged, both these were very dark ; on 

 December 'lQt\\ a ,^ emerged, again very dark, a further specimen 

 emerged on 27th, a (^ of an extremely dark form not previously met 



