little or no effect on either markings or colouring. Applying the facts thus ascer- 

 tained, Mr. Merrifield said he had obtained from summer pupae of illtintraria some 

 moths with summer colouring and spring markings, some with spring markings and 

 spring colouring, and some with summer markings, but an approach to spring 

 colouring. These specimens, with enlarged and coloured photographs of them, were 

 exhibited. 



Mr. C Fenn, who said he did not agree with Mr. Merrifield's conclusions, 

 exhibited a very long and varied series of specimens of Ennomos autumnaria, all of 

 which, he stated, had been bred at the same temperature. He expressed an opinion 

 that the presence or absence of moisture, rather than differences of temperature, was 

 one of the principal causes of variation. The discussion was continued by Lord 

 Walsingham, Colonel Swinhoe, Mr. Waterhouse, Mr. Jenner Weir, Mr. Elwes, Mr. 

 McLachlan, Mr. Porritt, Dr. Mason, Mr. Barrett, and others. 



Mr. G. T. Baker read a paper, entitled, " Notes on the Lepidoptera collected in 

 Madeira by the late T. Vernon Wollaston." The paper was illustrated by a number 

 of figures drawn and coloured some years ago by Prof. Westwood. 



Mr. Hamilton H. Druce exhibited several very beautiful species of butterflies, 

 belonging to the genus Hypochrysops from the Solomon Islands and Australia, and 

 read a paper on the subject, entitled, " A Monograph of the Lycsenoid genus Hypo- 

 chrysops, with descriptions of new species." 



Mr. C. J. Gahan read "Notes on some species of Diabrotica." —II. Goss and 

 W. W. Fowler, Hon. Secretaries. 



ON THE BRITISH SPECIES OF THE GENUS CICADULA (ZETT.), 



FIEBER. 



BY JAMES EDWARDS, P.E.S. 



As originally constituted by Zetterstedt, this genus comprised, 

 besides the insects the subject of this paper, the genera Gnathodus, 

 Eupteryx, TypJdocyha, Dicraneura, &c. In 1871, Dr. J. Sahlberg 

 restricted the use of the term Cicadula, and for him it was equivalent 

 to the Fieberian genera Kyhos and ChJoriia. Fieber, in his "Katalog " 

 (1872), appropriated the term for that group of small Jassids in which 

 the outer branch of the cubital nerve becomes obsolete soon after 

 leaving the base of the elytron, or, at all events, does not reach the 

 angular nerves, while the first wing-nerve, and the upper branch of 

 the second, are either connected by a transverse nerve, or very shortly 

 confluent at some distance before the apex. 



Seeing that Sahlberg had already appropriated the same term for 

 certain of the components of the original genus of Zetterstedt, it 

 would have been better had Fieber invented a fresh name for the 

 group which he wished to characterize ; but as Dr. Puton, in his 

 Catalogue, follows Fieber in the use of the name, it is expedient that 

 the same course should bo adopted here. 



