306 THE ENTOMOLOGIST. 
and Mr. A. P. Green, of Colombo, Ceylon. Mr. E. B. 
Poulton exhibited a mass of minute crystals of formate of lead, 
caused by the action of the secretion of the larva of Dicranura 
vinula upon suboxide of lead. He stated that a single drop of 
the secretion had produced the crystals which were exhibited ; 
and he called attention to the excessively high percentage of 
formic acid which must be present in the secretion, and to the 
pain, and probable danger, which would result from being struck 
in the eye by the fluid which the larva had the power of ejecting 
to a considerable distance. A discussion ensued, in which 
Messrs. White, Kirby, Slater and others took part. Mr. 8S. 
Stevens exhibited a specimen of Laphygma exigua, recently 
captured by Mr. Rogers in the Isle of Wight. Mr. W. F. Kirby 
exhibited, and read notes on, a specimen of Perilampus maurus, 
Walk., recently bred by Mr. Walter de Rothschild from Antherea 
tirrhea, Cram., one of the rarer South African Saturnide. Mr. 
Tl’. W. Hall exbibited a number of specimens of Xanthia fulvago 
(cerago), somewhat remarkable in their variation, and showing a 
graduated series, extending from the pale variety flavescens of 
Esper, to an almost melanic form. Mr. W. C. Boyd exhibited, 
and made remarks on, the larva of a species of Ornithoptera from 
New Guinea. Mr. H. Goss exhibited a series of Bankia 
argentula collected in Cambridgeshire, in June last; and 
also, for comparison, a series of specimens of the same species 
taken at Killarney in June, 1877. .It appeared that the Irish 
form of the species was larger and more brightly coloured than 
the English form. Mr. Eland Shaw exhibited a female specimen 
of Decticus verrucivorus (Linn.), taken in July last, at St. 
Margaret’s Bay, Kent. Mr. Waterhouse recorded the recent 
capture of Deiopeia pulchella at Ramsgate, by Mr. Buckmaster ; 
and the capture of Anosia plexippus at Gibraltar was also 
announced. Mr. J. W. Slater read a paper on “‘ The Relations of 
Insects to Flowers,” in which he stated that many flowers which 
gave off agreeable odours appeared not so attractive to insects as 
some other less fragrant species; and he stated that Petunias, 
according to his observations, were comparatively neglected by 
bees, butterflies and Diptera. Mr. Distant, Mr. Stainton, Mr. 
Weir, Mr. Stevens and the President took part in the discussion 
which ensued, and stated that in their experience Petunias were 
often most attractive to insects. Mr. Stainton referred to the 
