96 
SWALLOW-TAIL BUTTERFLY. 
Although somewhat local in Britain, this species 
seems to be pretty widely distributed throughout 
the southern parts of England, and has been found 
as far north as Beverley in Yorkshire. It probably 
does not extend beyond that place, as it certainly 
has never been observed in Scotland ; nor have we 
heard of its occurrence in Ireland. The fenny dis- 
tricts of Cambridgeshire produce it in considerable 
abundance ; it has been often found in Norfolk, and 
occasionally in Hampshire and Middlesex. Ray ob- 
served it both in Sussex and Essex ; and in the days 
of Wilkes (who has given a good representation of 
the caterpillar), it was rather plentiful near Westram 
in Kent. It is generally diffused over the continent 
of Europe : it occurs plentifully in Egypt and Syria; 
and specimens are said to have been brought to this 
country from the Himalayan mountains. It appears 
in this country about the end of May, and sometimes 
continues till the middle of August. 
