36 



somewhat curved, being convex on the hinged side, so that 

 the hne of egress of the pupa is facihtated. In L. crispata 

 there is above the trap-door an arch or dome of looser silk, 

 and the space between the two is stuffed with the grandly 

 plumose hairs of the larva, which do not appear to enter 

 into the construction of the cocoon elsewhere. The trap- 

 doors of the Australian Xylorydes to larval burrows and of 

 the trap-door spiders are perhaps better known, but such 

 structures are not frequent. 



The pupal burrow of Acvonycta strigosa, and of some others, 

 much resembles at first sight that of S. boleti, having an 

 outer and inner diaphragm. In these, however, the lower 

 diaphragm is not a trap-door, but is ruptured by the moth 

 in its escape. 



Mr. Main exhibited a batch of ova of Bonihyx rnbi de- 

 posited naturall}^ on a spra}' of Myrica gale, together with a 

 photograph of the same. 



Mr. Lucas read the Report of the Field Meeting of the 

 Society held at Oxshott on May i8th (page ii). 



Mr. Adkin gave an account of the annual meeting of the 

 South-eastern Union of Scientific Societies held at Hasle- 

 mere in the first week in June. 



JUNE 2-]th, 1901. 



Mr. F, NoAD Clark, Vice-President, in the Chair. 



Mr. A. W. Pepper, of Horniman's Museum, was elected a 

 member. 



Mr. Ashdown exhibited, and afterwards placed in the 

 Society's collection, the dragon-flies Anax imperator and 

 Ischnura pumilio, male and female, all taken in the New 

 Forest. 



Mr. Hewitt exhibited specimens of Geranium striatum and 

 Corydalis clavicidata from Kent. The former was a native of 

 N. America, and no doubt a garden escape. 



Mr. Turner exhibited an almost black specimen of Amphi- 

 dasys hetidaria taken in Camberwell. Mr. Main said that he 

 had taken a var. donbledayaria at Forest Gate, and had seen 

 another taken. Mr. F. M. B. Carr had also taken a black 

 female of the species, which had deposited a considerable 

 number of ova. 



Mr. West exhibited the following Hemiptera, all from the 

 Ravensbourne below Lewisham : — Microvelia pygmcca, a deve- 

 loped form which was very rare in this country ; Gerris 



