51 



JULY gth, 1^6. 



C. G. Barrett, Esq., F.E.S., Vice-President, in the Chair. 



Mr. Robert Adkin exhibited a short series of Dianthcecia 

 nana, bred from larvae taken in the island of Hoy, Orkney. 

 The specimens were all dark in colour, about midway in 

 tone between the Shetland and Scottish mainland forms. 

 Also a series of D. capsincola from the same locality, which 

 showed no variation from the usual English form, except 

 that one specimen had the orbicular stigma very yellow. 



Mr. Auld exhibited a bred series of A braxas grossiilariata, 

 including a specimen showing a most unusual form of varia- 

 tion ; the outer half of each wing was normal, but the basal 

 portion was curiously marked with elongated black streaks, 

 irregular in length, and not extending to the base in the 

 hind wings. 



Mr. Turner exhibited living pupae of Gonopteryx rhamni 

 from larvae taken during the field meeting at Byfleet ; also 

 life-histories of several species of Coleophora, namely, C. 

 lineolea, from Brockley and Lewisham ; C. albitarsella, from 

 Lewisham ; C. palliaiella, from Epping Forest ; C. laricella, 

 from Carlisle ; and C . fuscedinella, from Carlisle, showing the 

 very young curved cases and the straight mature ones. 



Mr. Lucas exhibited bred specimens of the rare dragon- 

 fly, Erythromnia nqjas, with pupa-skins ; of a Dipteron some- 

 what resembling a dragon-fly ; and of Raphidia, Ephemera, 

 and Chrysopa. 



Mr. Enock exhibited a living as well as a mounted speci- 

 men of the male of Prestwichia aquatica, which, with the 

 assistance of Messrs. Scarfield and Dennis, he had been 

 successful in discovering in a pond in Epping Forest. It 

 was apterous, having only the merest rudiments of wings, 

 jumped like a flea in the water, or sailed about on the sur- 

 face. He did not expect to find that the species was para- 

 sitic on eggs, for the ovipositor was too long and strong, 

 while the legs were comparatively weak. Perhaps the ova 

 were deposited on larvae. Ganin was responsible for the 

 statement that the species was parasitic in the eggs of 

 dragon-flies, and he had made most careful drawings of the 

 insects bred, which undoubtedly were not Prestwichia aquatica 

 (Polynema natans), but a species of Mymaridse having the 

 characteristic 13-jointed antennae and sessile abdomen of 

 that group. lie (Mr. Enock) felt absolutely certain of this, 

 as he had bred a species of Mymaridae from dragon-flies' 



