1904.] 23 



mdklini, Maniierh., taken at Bradfield in July, 1901, new to the BrilisVi list of 

 Colcoptera, and (2), a series of beetles taken at Bradfield at the exuding sap of trees 

 attaekfd by Cosaus llgniperda. Colonel J. W. Yerbury, specimens of rare British 

 Diptera from Porthcawl, including Leptopa fiUformis, Zett., Pelidnoittera nigri- 

 pennis, Litcina fasciata, and Thyreophora fusvata. Dr. T. A. Chapman, specimens 

 of Chfy<ophaniis phlams from Reigate, Locarno and Spain, showing the apparent 

 effects of temperature on the wing markings and coloration. Mr. G. J. Arrow 

 showed specimens and diagrams illustrating a remarkable kind of variability 

 noticed in beetles of the Trogid genus Acanthoceriis. The President showed an 

 exhibit sent by Mr. A. H. Thayer, of .VIondarock, N.II., U S.A. The greyish 

 silhouettes of two butterflies were represented in a tint nearly the same as the 

 basal-ground, but sufBciently distinct to be easily recognisable. Mr. Thayer con- 

 sidered the dark ground-colour of many Rhopalocerous insects represented shadow 

 under vegetation, the white submarginal lines and dots a generalization of flowers 

 and flower-masses. But these markings also had a second moaning in that they 

 tended to obliterate the tell-tale margin of the wings. The President also 

 exhibited specimens of Drurya antiinachus, together with the butterflies which 

 he suggested as forming a group synaposematic with it. Tiie central species 

 appeared to be Acrxa etjina, round which clustered a number of other species of 

 the same genus so much alike as to be probably indistinguishable upon the wing. 

 Examples of these were exhibited, viz., A. ze/is, perenna, rogersi, and pharsalun. 

 Another beautiful Papilionian member of the group, P. ridleyanus, was also shown, 

 in pattern it was nearest to that of the male A. eginn. In fact, so close was the 

 resemblance that Godart had been entirely misled by it, and had described the 

 Papiliu under the name o{ zidora as the female of Acrs-a egina. Mr. K Saunders, 

 F.R.S., conmiunicated '• A Supplementary Note to a Paper entitled ' Hymenoplera 

 Aculeata, collected by the Rev. A. E. Eaton, M.A., in Madeira and Tenerife, in the 

 Spring of 1902.'" — 11. Rowland-Brown, Hon. Sec. 



December 2nd, 1903.— The President in the Chair. 



Mr. F. H. Day, of Carlisle; the Rev. Thomas Prinsep Levett, of Frenchgate, 

 Richmond, Yorkshire, and Parkington Hall, Lichfield ; and Mr. Robert C. L. 

 Perkins, B.A., of Honolulu ; were elected Fellows of the Society. 



Mr. H. Goss, one of the Secretaries, again read the names of the Ofllcers and 

 Members of the Council proposed for election at tlie General .Meeting. 



Mr. G. T. Porritt exhibited, on behalf of Mr. T. Ashton Lofthouse, a specimen 

 of Xylophasia zollikuferi, taken at sugar near Middlesbrough, Yorkshire, on Sep- 

 tember 2()th last. He said he believed that this was only the second specimen 

 which had been recorded as having been taken in Britain. Mr. McLaclilan, F.R.S., 

 said the strongest evidence existed that a very large immigration of insects from 

 the nearest continental coast took place during the exceptional (for this year) spell 

 of warm and calm weather prevailing towards the end of September, and he was of 

 opinion that the specimen of A'yfojikasla zollikoferi, taken by Mr. Lofthouse in 

 Yorkshire, formed an item in this migratory swar<n. Mr. Malcolm lUirr exhibited, 

 and remarked on, a specimen of Dinarchtts dasypux, Illig., belonging to a family of 

 five or six species confined lo flic lialkans. 'i'lic I'resident, a series of photographs 

 sent by Mr. A. 11. Thayer to iliustr.ilc his views on the significance of the eoloura 



