SOCIETIES. 135 



Forest ; besides series of pale-coloured moths from various localities 

 were all represented in the above exhibits. A discussion ensued in 

 which the members gave their experiences with B. repandata. — Mr. 

 Tait stated that in breeding from extreme forms about seventy-five 

 per cent, followed the parents, but pointed out that he had found it 

 difficult to get black varieties to pair. He also remarked how closely 

 the predominating pale form from North Wales resembled the bare 

 rocks upon which it rested in the daytime. — Mr. Johnson, in his 

 series from Maer Wood and Burnt Wood, Staffs, remarked on the 

 great difference shown by the species in these two localities, only 

 four miles apart ; those from the former locality being cliiefiy very 

 dark greyish-black, while the latter place gave a lighter and much 

 browner form. — Mr. Charles Capper, London, sent a series of B. repan- 

 clata from Wimbledon, and a series of H. leucophcsaria from Eichmond 

 Park for exhibition.— Mr. Newstead brought four drawers showing 

 the life-history of the Tsetse Flies (Glossinise), being the unique 

 series of these flies from the museum of the Liverpool School of 

 Tropical Medicine. This very interesting exhibit attracted a large 

 amount of attention, and, in answer to questions, Mr. Newstead 

 alluded to the chief points in the economy of these flies. 



A23ril X^th. — Mr. E. Newstead, A.L.S., in the chair. — The chairman 

 delivered a lecture entitled " The Bionomics of Mosquitoes," in which 

 he dealt with the subfamilies Anophelinge and Culicinae ; he described 

 the Anopheline genera Anopheles and Pyretophorus, contrasting them 

 with the Culicine genera Culex and Stegomyia in a very clear and 

 thorough manner. Mr. Newstead illustrated the lecture by blackboard 

 drawings and by the following exhibits : — Living larvae and pupae of 

 Corethra and Culex : a case showing the complete life-history and dis- 

 tribution of Stegomyia calopus, the mosquito which transmits yellow 

 fever ; and the following species concerned in carrying filarise, which 

 not uncommonly cause the condition known as elephantiasis, viz. 

 Culex fatigans, Pyretophonis costalis, Myzoniyia rossi, Mansonia afri- 

 canus, and Stegomyia fasciata. The remainder of the evening was 

 devoted to an exhibition of Hydroecia nictitans, H. lucens, and H. 

 paludis, most of the members present having brought their series of 

 these moths. Tlie discussion was opened by Mr. F. N. Pierce, who 

 showed preparations of the genitalia of the three species named 

 above under the microscope, as well as of the new species brought 

 forward by the Eev. C. E. N. Burrows, of Mucking, at a recent meeting 

 of the City of London Entomological Society. Mr. Pierce demon- 

 strated that the genital ancillaries are markedly different, and fully 

 support the view that we really have four distinct species confused 

 under the name nictitans. Mr. Pierce also showed photographs of 

 genialia of Betinia huoliana and B. pinicolana, clearly proving these 

 two insects to be distinct. — Other exhibits were: — Mr. W. Mansbridge, 

 a series of Zygcena achillea from Argyll, with Z, minos, from Wales, 

 for comparison. Mr. F. N. Pierce also showed Z. achillecB, from the 

 Continent, with many other species of the genus. — Mr. W. A. Tyer- 

 man, a bred series of A^nphidasys strataria, from Delamere, the 

 females especially being very dark and heavily banded. — Mr. Moun- 

 field, of Warrington, in addition to his very fine series of H. nictitans, 

 lucens, Skud paludis, a very dark brown form of Drepana falctda, pale 



