112 
Mr. W.F. Kirby exhibited a dwarf male specimen of Polyommatus Icarus (Alexis) 
measuring only 83 lines in expanse of wings. This pigmy was captured by Mr. Kirby 
about the 20th of July last at the salt marsh at Hove, uear Brighton, and except in its 
diminutive size did not present any variation from the ordinary form of the insect, 
which was then very common in that locality. 
Mr. Stainton exhibited a highly-magnified coloured drawing of the larva of 
Laverna subbistrigella, together with pods of Epilobium montanum in which the 
larve had fed, and which had, in consequence, a somewhat stunted and deformed 
growth: the habit of the insect was discovered at Wiesbaden, and Mr. Barrett had 
this year detected the larve at Haslemere, where the imago had previously been 
captured. 
Mr Stainton (on bebalf of Mr. Dorville) exhibited a specimen of Caradrina cubi- 
cularis having a number of red Acari symmetrically arranged upon its wings. 
Mr. Stainton mentioned that he had this year noticed an unusual abundance of 
Chelifers on the legs of house-flies; the natural place for Chelifers would seem to be 
amongst vegetation, and Dr. Hagen was of opinion that they attached themselves to 
flies only for the purpose of locomotion ; with this he could not agree, for the Chelifer, 
according to his observations, never quitted a fly to which it once attached itself, and 
the fly was powerless to get rid of it. On one occasion he had seen a fly with three 
Chelifers on one of its legs. 
Mr. M‘Lachlan exhibited both sexes of Aishna borealis (Zetterstedt), taken by 
him at Rannoch in June last. This dragon-fly was previously known as British by a 
single example only, captured many years since in Scotland by Mr. Wilson, and now 
in the collection of De Selys Longchamps. 
Mr. M‘Lachlan also exhibited Sialis fuliginosa (Pictet, Brauer), a species new to 
Britain, and taken at Rannoch. There were but two European species of this genus, 
and both had now occurred in this country. 
Mr. M‘Lachlan also exhibited two new British Trichoptera; one, a Rhyacophila, 
from the neighbourhood of Edinburgh, allied to, if not identical with, R. ferruginea 
(Hagen); the other a Stenophylax, from Rannoch, for which he proposed the name 
of S. infumatus. 
Mr. S. Stevens exhibited a box of Coleoptera, part of a collection made in Damara- 
land by the well-known traveller Mr. Andersson; amongst them were a Phryssoma, a 
Manticora (latipennis?), several species of Goliathus, G. Burkei, G. Layardi, and an 
Eudicella, n. sp., allied to E. Smithii. 
Prof. Westwood gave an account of a visit to the Exhibition of Insects and Insect- 
products, which was opened at Paris on the 15th of August last. He mentioned par- 
ticularly some bee-hives which were sold for If. 25c. each; and an octagonal bar-hive, 
which was so constructed as to be capable of division into two distinct hives: d@ propos 
of the silk-products, he meutioned that the silk-merchants were beginning to import 
Ailanthine as an article of commerce, and that certain experiments had recenuy been 
made at Toulouse with a view to test the quality of the Ailanthus wood; the tenacity 
and density of Ailanthus (as given by three experiments) and of elm and oak (as given 
by seven experiments) were comparatively as follow :— 
AILANTHUS. Em. Oak. 
Tenacity . : P 32:812 24867 19°743 
Density ‘ : : ‘713 -604 ‘751 
