ii 
cusoma custrensi*. He also showed a larva of Malacusoma francunica. 
FIeliophila impudens.— Mr. 8. J. Bell, a series of Heliophila impu- 
(Inw, including specimens from Wimbledon, both bred and captured, 
and one from the New Forest, the latter being more suffused with 
pink than the London forms. 
General Exhibit of Cyaniris aruiolus, and Discussion. —Mr. A. 
W. Mera, series of Cyaniris aryiulus, which showed the darker colora¬ 
tion of second brood 2 2 , as compared with those of first brood ; 
Mr. C. P. Pickett, <ary him from Clandon, including a 2 of first 
brood, showing a distinct tendency towards the coloration usually cha¬ 
racteristic of second brood ; Mr. L. B. Prout, specimens of first and 
second brood of 2 $ , to illustrate the difference already referred to, 
also a t? taken at St. Helens, Isle of Wight, on April 21st, 1902. 
The President, in opening the discussion on the spread of <'. aryiolux 
in the environs of London, remarked that he had never seen it in any 
suburban locality nearer than Wood Street, Walthamstow. Mr. A. 
W. Mera stated that he took larva) of aryiolux at Chiswick in 1877, 
and saw the perfect insect on the wing at Hammersmith a year or 
two later. Mr. Shaw recorded its appearance at Finchley in fair 
numbers recently. Mr. Bell had seen it occasionally in Brixton Road, 
and Mr. Bacot at Clapton—both localities within the four-mile radius, 
in response to a question raised by Mr. Prout, Mr. Mera stated that 
C. aryiolm pupated on the underside of a leaf. Upon Mr. Prout’s 
suggesting that a succession of favourable seasons might be the reason 
of the evident spread of this species round London, Mr. Bacot pointed 
out that as the ova are laid on blossom, should rough weather occur 
before they hatched, they would probably be swept away by the wind 
and destroyed. Mr. Prout, in summarising the discussion, drew three 
conclusions therefrom—ithat (aryiulux had certainly become 
more plentiful of late years, that it was spreading near London, and 
that these facts were probably accounted for by favourable climatic 
conditions. 
Note on Leugoma chrysorrhcea. —Mr. A. Bacot remarked that it 
was curious that a brood of Leucoma chrysorrhoea in his possession did 
not seem adversely affected by the prevalent cold weather, as he con¬ 
sidered that the severity of the climate was the cause of this insect’s 
extinction. Mr. Prout pointed out that L. chrysorrhoea could hardly 
have ever been as plentiful as it undoubtedly was in times past if the 
climate was the cause of its extinction. Mr. A. W. Mera questioned 
whether it ever really became extinct. He knew that the late Mr. -J. 
A. Cooper took a specimen on a lamp near Eastbourne during the so- 
called period of extinction, and, further, that the first specimens he 
(Mr. Mera) had received since the recurrence of the species came from 
the same locality. Mr. Burrows recorded finding two nests of the 
larva) of L. chrysorrhoea at Stanford-le-liope, Essex. 
Note on Polia flavicincta ova. —Mr. Prout recorded that from a 
batch of ova of Polia flavicincta hatchings had been going on over a 
period of three to four weeks. 
Disease in Graphiphora opima. —Mr. Mera said the larva of ( j rapid- 
phora opima was subject to disease and death when nearly full fed. He 
trad observed that the premonitory symptoms were that the body of 
the larva was depressed behind the head, and that the larva nibbled 
the mid-rib instead of the edge of the leaf. Mr. Bacot believed that 
