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Wednesday, October 17th, 1917. 



Dr. C. J. Gahan, M.A., D.Sc, President, in the Chair. 



Election of Fellows. 

 Mr. John Williams Hockin, Castle Street, Launceston, 

 Cornwall; Col. Turenne Jermyn, Highclifie, Weston-super- 

 Mare; Mr. Arthur Wallace Pickard-Cambridge, M.A., 

 Balliol College, Oxford; and the Eev. Prebendary A. P. 

 WiCKHAM, East Brent Vicarage, Highbridge, Somerset, were 

 elected Fellows of the Society. 



Exhibilions. 



Hyper-parasites on Apanteles glomeratus. — Mr. 

 DoNiSTHORPE exhibited a number of small yellow cocoons 

 which were taken on a fence at Putney on Sept. 15th 

 last, and which had emerged from the body of a White 

 Butterfly larva. These cocoons, belonging to a parasite on 

 the larva of this butterfly, are of course common everywhere 

 just now where the butterfly has occurred. He stated that 

 he had found the cocoons just after they had emerged from 

 the larva to which they were attached, the latter being still 

 alive, and he observed two (or three?) small Hymenopterous 

 insects hovering about the cocoons. One of these was set ured, 

 and the larva and cocoons were taken home in a glass-topped 

 box. On October 8th Hymenopterous insects began to 

 emerge from the cocoons and were still doing so. Of the 30 

 specimens exhibited, some of which were alive, 28 belonged 

 to the insect captured on Sept. 15th, an Ichneumon, and 2 

 (a c? and $) to another species of Hymenoptera, also an 

 Ichneumon. It would seem certain that these two species are 

 hyper-parasites, parasitic on the parasite of the butterfly 

 larva. The questions arose if the cocoons had not been 

 disturbed, would they all have produced the hyper-parasites ? 

 and is it necessary for the latter to seek out the cocoons just 

 after they have emerged from the original host's body ? 



A NEW Sub-species of Morpho rhetenor. — Mr. Dicksee 

 exhibited a probable new sub-species of Morpho rhetenor, and 

 gave the following description : — 



