100 



of Scientific Societies, to illustrate the geological formations 

 of the Gault and Wealden series as they appear in the south- 

 eastern counties of England, were exhibited in the lantern. 

 Mr. Lucas, B.A., read the descriptive lecture circulated with 

 the slides, and a short discussion ensued. 



JUNE 9th, 1898. 



Mr. J. W. Tutt, F.E.S., President, in the Chair. 



Mr. Lucas exhibited coloured drawings of the rare Odonata 

 Libellula fulva, showing details. 



Mr. Bishop exhibited a bred specimen of Brcphos parthcnias, 

 having a gap in the wing, due to an injury to the pupa. The 

 gap was noted to be ciliated. He also exhibited specimens 

 of Thecla rubi, and remarked on the variability of the andro- 

 conial marks in this species, while in all the rest of the 

 species of the genus they were notably constant ; specimens 

 of Rumia luteolata showing considerable variation in the red 

 spotting ; and larvae of Tceniocampa munda, T. incerta, and T. 

 stabilis. 



Mr. Tutt, referring to eggs of Hcpialus lupulinus, which he 

 exhibited, said that under a lens they looked liked little black 

 sloes, and were most distinctive. 



Mr. West, of Greenwich, exhibited series of Trapezonotus 

 agrestis and Tropistethus holosericeus obtained by shaking 

 moss in Headley Lane. 



Mr. Shortridge Clarke mentioned a remarkable occurrence. 

 He stated that thousands of larvae and imagines of Caradrina 

 quadripunctata {cubicularis) had been observed in a large flour 

 store in a warehouse where a quantity of new-mown hay was 

 stored annually. From a small mass of cocoons he had bred 

 more than 500 imagines, none of which, however, showed 

 the slightest variation from typical lines. The cocoon mass 

 looked like a dirty sponge, in which each pupa had a cell of 

 its own as it were. To obtain light in the store it was 

 necessary to clean the window twice a day. He also re- 

 marked upon the difficulty of rearing the pupa of Dianthcecia 

 c<xsia, which, according to his experience, almost invariably 

 died in the last stage. 



