322, THE ENTOMOLOGIST’S RECORD. 
we have only half the materials for tracing the means by which the 
struggle for existence of any species is carried on, the conditions of 
the long warfare, and the circumstances which decide the ultimate 
Issues, 
Lepidoptera at Burgess Hill, Sussex. 
By J. C. DOLLMAN. 
The following list, though it may not contain any very specially 
rare species, may possibly be of interest as a record of a locality not 
much known. ‘The insects mentioned were seen or taken between 
July 26th and September 10th. In a clover field between Burgess 
Hill and Hassocks Gate, on the London Road, a female Papilio 
machaon was netted on August llth. It was a large insect, but much 
worn and broken. ‘There is a large sheet of water with a reedy bank 
and a mill stream in the vicinity which may be explored. Colias edusa 
and Colias hyale were both found on August 10th in the clover field 
mentioned, (’. edusa was in fairly large numbers, and continued to be so 
all through August, both in clover fields and on the adjacent South 
Downs up to September 10th, the day of leaving the locality. A pair 
was taken on September 5th and ova obtained. C. hyale was found 
frequently in this and other clover fields in the neighbourhood up to 
the date of my leaving, and the insect was taken on the following 
dates: August 10th, 11th, 13th, 14th, 15th, 16th, 17th, 18th, 24th, 
25th, September 8rd, 4th, 6th, 7th—24 in all. This butterfly does 
not appear to locate itself for long in this district upon the clover fields 
where it is bred, but after a day or two will betake itself to the downs 
and there flies strongly and warily on the slopes. With reference to 
the capture of this insect in the open on the downs it will be found 
that if three or more persons be engaged it may be headed off 
cautiously, and on being approached from three points at once will not 
attempt a headlong escape, but seems to get confused and takes refuge 
on the ground, from which it may be taken with comparative ease. 
After adopting these tactics not one specimen escaped capture. While 
on the clover it does not seem a shy or cunning thing, and can be 
taken without much trouble as it flies along the edges of the field. It 
is altogether a different creature in the open on the downs. Neither 
C. edusa nor C. hyale seem to resort to a soaring flight as a means of 
escape, and one seldom sees either species flying at an altitude of more 
than five or six feet from the ground. (Gonepterya rhamni was well out 
and numerous early in August on the clover, and in fine condition. 
Argynnis aglaia was flying on ODitchling Beacon in fairly good 
numbers, though worn and faded, in August. Vanessa io was 
numerous in the same place, but suddenly disappeared at a day’s 
notice, still in perfect condition, the same thing was noticed with Pyra- 
meis cardui, though the insect had not been plentiful like the preceding 
one. P. atalanta was present sparingly, and Pararye megaera fairly 
numerous, and from a female of the latter species ova were obtained and 
larvee bred. The larvee thrive well on common couch-grass. Satyrus semele 
was in great strength on the downs in the neighbourhood of Ditchling 
Beacon, and in all conditions, from the newly-emerged insect to the 
worn-out example, in the middle of August. Hpinephele tithonus, swarm- 
ing on every roadside, was out for some time, and frequently on the 
