xlvi 



Election of a Member. 

 Mr. T. R. Billups, of 4, Swiss Villas, Coplestone Road, Peckham, was 

 balloted for and elected an Ordinary Member. 



Exliihitions, dc. 



Mr. W. C. Boyd exhibited a remarkable variety ot Aspilates citraria, 

 a specimen of Cidaria tcstata in which tlie hind-wings were completely 

 absent, and a Noctua resembling Ilndena dentina, but differing from this 

 species in the form of the body, taken at Ilfracombe. 



Mr. M'Lachlan said he was compelled to once more bring the subject of 

 the sculptured stones on the shores of the Swiss lakes before the notica of 

 the Society. Professor Forel, upon seeing the notice of the last meeting in 

 ' Nature,' had written to him, explaining at length the nature of those 

 sculpturings according to his views. His remarks may be concisely rendered 

 as follows: — There are three principal types of markings: (1) Where the 

 stones are covered with chlorophyllous Algse, serpentine furrows, the work 

 of larvfe of Tinodes, occur. {'2) Where the stones are covered with inerusting 

 AlgaB the markings are more numerous and meandiform, and due, as he 

 considered, to the permanent pathways made amongst the Algte by insect 

 larvae, worms, mollusks, &c., intensified by the carbonic acid expired by the 

 animals. (3) Grooves caused by the larvge of Chirononius. 



Professor Westwood exhibited a series of drawings illustrating the 

 economy and transformations of several species of Trichopterous and other 

 Neuropterous insects, of which he gave an account ; also drawings of a 

 number of new and interesting exotic species of Heteropterous Hemiptera, 

 allied to the genera Syrtis, Emesa, Rhyparochromus, &c., contained in the 

 Hopeian Collection, full descriptions of which he proposed shortly to com- 

 municate to the Society for publication. 



Prof. Westwood next called the attention of the Members of the Society 

 to the present condition and future prospects of the Hopeian Collection of 

 Entomology in the University of Oxford, and of the Hopeian Professorship 

 of Zoology connected therewith, considering that it was very desirable that, 

 at his advanced age, entomologists should, in the interest of their science, 

 be made fully acquainted with the extent of the Hopeian Collection, the 

 regulations connected with the Professorship, and the modification which 

 has been proposed by the Oxford University Commission, now sitting, 

 which, in his opinion, would materially modify, and to a certain extent 

 render nugatory, the intentions of the founder of the Professorship and 

 donor of the Collection. The Hopeian Collection of insects and other 

 articulated animals is now one of the largest in existence. Besides the 

 original Hopeian Collection, to which that of Prof. Westwood was subse- 

 quently added, large additions have been made from time to time. By the 



