CLOUDED YELLOW BUTTERFLY. 105 



that plant is not indigenous to Britain, it probably 

 feeds in this country on some diadelphous herb per- 

 taining to the same natural order. Tlie butterfly 

 occurs in the south of England in considerable plenty 

 in particular years, while in others scarcely an ex- 

 ample is to be met with. It seems to prefer the vi- 

 cinity of the sea, having been found more copiously 

 than elsewhere along the south-east coast, particu- 

 larly in the neighbourhood of Dover. It is likewise 

 seen occasionally in the midland counties. Over 

 foreign lands C edusa is characterised by a very ex- 

 tensive range. It is well known in most portions 

 of the continent of Europe. Mr Burchell found it 

 m the south of Africa, and Mr Swainson has seen 

 specimens from the mountains of NepaTii. 



