17 



that in Africa the same species ranges unchanged over a great part of the continent. He 

 considered that careful experiments as to the powers of modification of species resulting 

 from variations of food would produce important results. He had looked in vain 

 for any structural variation in many of the larvae of the same genera published by 

 Mr. Stainton, a difference in colour and a variation in the form of the mine or case 

 (all of which might be induced by the variation of the leaves on which the insects 

 fed) being in many cases the only appreciable differences. 



Mr. Desvignes communicated a paper intituled " Descriptions of New Species of 

 Bassus." 



Part IX. of the current volume of the Society's ' Transactions ' was announced as 

 published. 



Augusts, 1861. 

 J. W. Douglas, Esq., President, in the chair. 



Donations. 



The following donations were announced, and thanks ordered to be presented tu 

 the donors: — ' Proceedings of the Koyal Society,' vol. xi. No. 44 ; presented by the 

 Society. ' Proceedings of the Zoological Society,' 1861, part 1 ; by the Society. 

 ' Sitzungberichte der Konigl. bayer. Akademie der Wissenschaften zu Miinnchen,' 

 1861, 1 ; by the Academy. 'The Natural History of the Tineina,' vol. vi. ; 'The 

 Entomologist's Weekly Intelligencer,' Nos. 248 — 252 inclusive; by H. T. Stainton, 

 Esq. ' The Zoologist' for August; by the Editor. 'Anatomisch-Physiologische Un- 

 terserchungen iiber den Athmungsprozess der Insekten,' von H. Rathke ; by the Author. 

 ' Die Metamorphose des Caryoborus (Bruchus) gonagra, Fabr.,' von H. L. Elditt ; by 

 the Author. ' Schieften der Koniglichen Physikolisch-okonomischen Gesellschaft zer 

 Konigsberg,' Erster Jahrgang, Abth. 1 and 2 ; by the Society. ' The Athenaeum ' for 

 July ; by the Editor. 



Election of a Subscriber. 



John G. Grenfell, Esq., of the British Museum, was elected a Subscriber to the 

 Society. 



Exhibitions. 



Mr. Bowring exhibited a box of Coleoptera from Penang, including many interest- 

 ing species of Longicorns, some remarkable Cetonidae and Cassididae, a new species 

 of Paussus, &c. 



Mr. Stevens exhibited a splendid series of BuprestidaB, from the neighbourhood of 

 Adelaide, containing upwards of fifty species. 



C 



