( xxxvii ) 



October 2, 1889. 



The Kt. Hon. Lord Walsingham, M.A., F.B.S., President 

 in the Chair. 



Donations to the Library were announced, and thanks voted 

 to the respective Donors. 



Election of a Fellow. 

 Mr. Arnold Umfreville Henn, of Heaton Chapel Rectory, 

 near Stockport, was elected a Fellow. 



Exhibitions, dc. 



Mr. F. P. Pascoe exhibited a number of species of Coleo- 

 ptera, Lepidoptera, Hymenoptera, Neuroptera, Hemiptera, 

 Orthoptera, and Diptera, all named, collected by himself 

 during the past summer at Brindisi, and in Greece and the 

 Ionian Islands. 



Mr. J. W. Douglas sent for exhibition specimens of L,ygu5 

 viscicola, Puton, a species new to Britain, taken at Hereford, 

 in September last, exclusively from mistletoe, by Dr. T. A. 

 Chapman. 



Mr. R. M'Lachlan exhibited nearly one hundred specimens 

 of Trichoptera recently collected in Iceland by Mr. P. B. 

 Mason. Only six species were represented, and of these five 

 had been previously recorded from the island. Mr. M'Lachlan 

 remarked on the great amount of variation existing in some 

 of the specimens. 



Mr. E. B. Poulton exhibited a mounted specimen of the 

 yellow powder from the cocoon of Clisiocampa neustria, under 

 a power magnifying 188 diameters. The powder was thus 

 seen to consist of crystals, so minute that the form could 

 only just be made out under this power. Mr. Poulton 

 said that it had independently occurred to him and the Eev. 

 J. W. B. Bell, another member of the Oxfordshire Natural 

 History Society, to work at this powder. Mr. Bell first 

 discovered its crystalline nature, and the fact that it is 

 discharged from the anus of the larva : he was, however, 

 unable to make out its chemical constitution. Mr. Poulton 

 dissected a mature larva, tracing the powder back to its origin 



