Hderogynis 'paradoxa. 



723 



fastened together edgewise of which to make the 

 veils, whilst Hderogynis uses only loops of silk. 



two 



Difference between the van 



Pcnella. 



20-21m.m. 



Time of 

 appearance 



Bcjarcnsis. 

 June 20-30 



oi H. 'pcvradoxa, E,mbr. 

 Canddariie. Piedraliitsc. 



Size of (J (40 specimens) 

 20-29 m.m. 

 very variable, 

 average 25 m.m. 



Very dark Colour of i rather dark 



Very 

 variable 



Often 

 hidden 



Larva, 

 colour 



rather dark, 



i.e. green-black 



marking strong, 



very uniform 



July 12-20 



(45 specimens) 



22-26 m.m. 



not much 



variation, 



average 24 m.m. 



pale 



very ]iale, 

 i.e. green -black 

 marking nearly 



evanescent, 

 very uniform 



July 18-28 

 and later 



(76 specimens) 

 24-26 m.m. 



very uniform, 

 full 25 m.m. 



very dark 



pale and dark, 



none as pale as 



Candelariee; 



variable 



Cucoon 9 conspicuous 



(abundant) 



conspicuous Cocoon i hidden 



(found one) 



hidden conspicuous 



(found two (abundant) 



destroyed ones) 



hidden conspicuous 



(found) but usually (95 



p.c. ) parasitised 



a majority of 



healthy ones 



probably hidden 



(bred 8 moths) 



These three races of H. paradoxa appear to be as 

 definitely distinct from each other, both as larva -^iipa 

 and imago, either in colour or habit or both, as if they 

 were distinct species. Still I find it quite impossible to 

 regard them as more than local races. Where I find 

 something to learn from them is in considering how such 

 definite races preserve their distinctness, although they 

 are one species and live within a few miles of each other. 

 In the cases of the vars. corydoniits and hispana of 

 Lycmia corydon, I was able to understand how one of these, 

 hispana, was suitable to a limestone country, and cory- 

 donms to other conditions, but what I could not and do 

 )iot at present understand, is how they keep distinct living 

 on adjacent and practically sometimes on the same ground. 



lu the case of H. paradoxa, J can get a little nearer 



