98 [April, 



of Lincoln College, Oxford ; Mr. Ernest Cooper Joy, of 2, St. Kilda's Road, 

 Stoke Newington, N. ; Mr. John W. Ward, of Rusinurbe House, Somerset 

 Eoad, Coventry ; and Mr. Frank C. Willcocks, Entomologist to the Khodivial 

 Agricultural Society of Cairo, Egypt ; were elected Fellows of the Society. 



Dr. M. Burr gave an accovint of the forthcoming Entomological Congress 

 to be held at Brussels in August next, and appealed to all Fellows for their 

 sixpport, as well as to the Local Natural History Societies throughout the 

 United Kingdom, and Dr. K. Jordan gave an outline of the programme of 

 papers already arranged to be delivered. 



The Secretary having read a letter from the Entomological Society of 

 Russia, inviting the Society to send a delegate to the fortlicoming Jubilee 

 Celebration in St. Petersburg, it was resolved unanimously to send a letter of 

 congratulation to the Society in honoiir of the occasion. 



Mr. John Alderson, who was present as a visitor, exhibited tlie results of 

 six weeks' collecting in the Rhone Valley, Switzerland, in May and June last, 

 representative in all of one hiindred and two species of Rhopalocera. Mr. E. 

 E. Green, sent for exhibition boxes designed for the convenient storage of 

 butterflies in paper envelopes, together witli the original model as made by a 

 local tinsmith in Ceylon. Dr. K. Jordan exhibited two specimens of the new 

 earwig, Arixenia esau, lately described by him in Nov. Zool., p. 313, pi. xvi-xviii 

 (1909). The insect was discovered in the breast-pouch of a specimen of the 

 naked bat obtained in Sarawak. Under the microscope were shown the man- 

 dible and maxilla of Arixenia, together with the mandible of Hemimerus. 

 Dr. Malcolm Burr, D.Sc, F.L.S., F.Z.S., commi;nicated a paper, entitled, " A 

 Revision of the Lahiduridse, a Family of the Dermaptera." 



The discussion of the aiRnities of Agriades thetis (bellargus) and A. coridon, 

 adjovirned from the December meeting, was resu^med by Mr. J. W. Tutt, who 

 exhibited series of the two species, demonstrating in particiUar the several 

 forms of A. coridon as occurring in the Pala3arctic region. He pointed out in 

 detail the nearness of the two Agriadid species in the structure of their eggs, 

 larva}, piipEe, imagines, especially noting in the latter case the similarity in the 

 (J genitalia. Observing tliat it had generally been assiuned that closely -allied 

 species had been maintained if not developed by the setting iip of some effective 

 boundary in their environment or moi-phological structiu-e, resulting in isola- 

 tion, it was remarkable that no sxich boundai'ies could be found in these species. 

 Not only was their environment similar, their morphological structure almost 

 identical, biit their actual range was practically the same. 



Exhibitions were also made by Mr. G. T. Bethune-Baker of varieties of 

 A. coridon andhellargus respectively from Spain, Greece, Asia Minor, and Persia ; 

 by the Rev. George Wheeler of examples from Italy and Central Europe, and 

 by Miss M. E. Fountaine of coridon, var. olympica, taken by herself at Amasia, 

 Asia Minor, and of thetis, var. polonus, from the Lebanon. 



At the end of Mr. Tutt's remarks, the discussion was continued by Mr. A. 

 L. Rayward, Mr. Hamilton H. Druce, the Rev. G. Wheeler, Dr. T. A. Chapman, 

 Mr. W. G. Sheldon, Miss Fountaine, and other Fellows, the President paying a 

 special tribiite to Mr. Tutt's lucid explanation and diagnosis of the various 

 foi-ms of the two closely-allied butterflies. — H. Rowland-Brown, Hon. Secretary. 



