LONDON. Entomological Society, November 2.—Dr. D. Sharp, President, in the chair.—Mr. Stevens exhibited a specimen of Acidalia immorata, L., purchased by him some years ago at the sale of the collection of the late Mr. Desvignes. He remarked that specimens of the insect lately captured near Lewes had been described last month by Mr. J. H. A. Jenner as a species new to Britain.—Mr. Adkin exhibited, and made remarks on, a series of male and female specimens of Arctia mendica from co. Cork; also, for comparison, two specimens of A. mendica from Antrim, and a series of bred specimens from the London district.—Mr. Enoch exhibited a specimen of Calocoris bipunctatus containing an internal parasitic larva.—Dr. Sharp exhibited three species of Coleoptera new to the British list, viz. Octhebius auriculatus, Rey, found some years ago in the Isle of Sheppey, but described only quite recently by M. Rey from specimens found at Calais and Dieppe; Limnius rivularis, Rosenh., found by Dr. J. A. Power at Woking; and Tropiphorus obtusus, taken by himself on the banks of the Water of Cairn, Dumfriesshire.—Dr. Sharp also exhibited a Goliathus recently described by Dr. O. Nickerl as a new species under the name of Goliathus atlas, and re marked that the species existed in several collections, and had been supposed to be possibly a hybrid between G. regiits and G. cacicus.—Mr. Eland Shaw exhibited two species of Orthoptera, which had been unusually abundant this year, viz. Nemobius sylvestris, and Tettix subulatus.—Mr. E. B. Poulton exhibited the cocoons of three species of Lepidoptera, in which the colour of the silk had been controlled by the use of appropriate colours in the larval environment at the time of spinning up. He said this colour-susceptibility had been previously proved by him in 1886 in the case of Saturnia carpini, and the experiments on the subject had been described in the Proc. Royal Society, 1887. It appeared from these experiments that the cocoons were dark brown when the larvae had been placed in a black bag; white when they had been freely exposed to light with white surfaces in the immediate neighbourhood. Mr, Poulton stated that other species subjected to experiment during the past season afforded confirmatory results. Thus the larvæ of Eriogaster lanestris had been exposed to white surroundings by the Rev. W. J. H. Newman, and cream-coloured cocoons were produced in all cases; whilst two or three hundred larvae from the same company spun the ordinary dark brown cocoons among the leaves of the food-plant. In the latter case the green surroundings appeared to act as a stimulus to the production of a colour which corre sponded with that which the leaves would subsequently assume. Mr. Stainton suggested that larvae should be placed in green boxes, with the view of ascertaining whether the cocoons would be green. It had been suggested that the cocoons formed amongst leaves became brown because the larvae knew what colour the leaves would ultimately become. The discussion was continued by Mr. Waterhouse, Dr. Sharp, Mr. McLachlin, and others.—Mr. S. Klein read “Notes on Ephestia kuhnietta” and exhibited a number of living larvae of the species, which he said had been recently doing great damage to flour in a warehouse in the East of London.—Mr. A. G. Butler contributed a pape “On the species of the Lepidopterous genus Euchromia; with descriptions of new species in the collection of the British Museum.”—Lord Walsingham communicated a note substituting the generic name Homonymus for the generic name Ankistrothorus—which was preoccupied-used in his “Revision o the genera Acrolophus and Anaphora” recently published by the Society.