societies. 285 



Thk London Natural History Society. 



Maich 2ii<l, 1915. — Nkw Member. — Mr. Herbert Loney, of 354, 

 Goswell Road, E.G., was elected a member. The spotted fever 

 ORGANISM. — Dr. Cockayne exhibited Pijilocnrcioi intracelliihnis-meniiuji- 

 tiilis of Weickselbaury, the organism which produces epidemic cerebro- 

 spinal meningitis ("spotted fever"). Aherrations of the genus 

 Brknthis. — Mr. H. B. Williams, aberrant forms of Brenthia eiijilirosijne 

 and Anij/iuiis a<ilaia. Mr. A. W. Mera, two cabinet drawers of " fritil- 

 laries," including some fine dark forms of Ih-oithin sclcne and Arf/i/nniH 

 adijipe. 



Manh 16M.— New Members.— Mr. W. H. A. Austen, of 102, 

 Knightsbridge, S.W. ; Prof. F. E. Hopkins, M.A., F.R.C.P., F.R.S., 

 71, Grange Road, Cambridge; Mr. G. T. Porritt, F.L.S., Elm Lea, 

 Dalton, Huddersfield ; and Mr. R. Worsley-Wood, M.A., Emmanuel 

 College, Cambridge, were elected members of the Society. Lepto- 

 ciRcus SPECIES exhibited. — Dr. Cockayne exhibited specimens of Lejito- 

 circus ciirius and L. libellitloides. Gynandromorph H. marginaria, etc. 

 — Mr. W. E. King, a gynandromorph of Hijbeniia marginaria, right 

 side $ , left J , and a series of $ s, and a series of //. leiicophacaria with 

 ab. inarniorinaria and ab. iiicrularia, all from Chingford. Aberration 

 OF A. THETIS. — Mr. C. H. Williams, a series of $ Ai/riades t/ictis, vary- 

 ing from brown with well developed marginal lunules to almost entirely 

 blue. Collection of British Social W'asps. — Mr. C. Nicholson, a 

 complete type collection of British social wasps, with examples of their 

 nests, together with a comprehensive collection of insects of other 

 orders, in illustration of a paper read by him on " Parasites, Paying- 

 guests, and Mimics of W^asps." 



April 20t/i. — Mr. A. 'W. Mera exhibited spring insects from Epping 

 Forest, including dark l'/ii(/alia pedaria, Apoclteiiiia lii.spidaria, and 

 Ill/hernia lencophaearia with its ab. inarniorinaria. Larv.e of A. ash- 

 woRTHii. — Mr. L. W. Newman, larvro oiAf/rotis aslucorthiihom Colwyn 

 Bay. It was pointed out by Mr. Bobbins that these larvte, which were 

 feeding on sallow, began their meal by eating a hole between the mid- 

 rib and the edge of the leaf. Hibernating stage of P. atalanta. — Mr. 

 Newman stated that the larvre of Pi/ranwis atalanta, taken in October, 

 had pupated in November. The pup^e had been exposed to frost and 

 were now all alive. He suggested that this went to prove that the 

 insect was capable of passing the winter in the pupa state, and that all 

 early (May) specimens seen had passed the winter as pupie. 



Mai/ IStli. — Discrimination of the Xanthia (sens, lat.) larv.^. — 

 Mr. H. Worsley-Wood exhibited the larviB of ( 'itria [Xanthia) fnlraiin and 

 ( '. {X.)liitea, and pointed out the obvious distinctions in them, also larvff 

 of these two species together with larvtc of (h/iria ainaiio and Xanthia 

 occllaria in a box, all feeding on Poplar, and invited the members to 

 divide them correctly. Aberration of P. hastiana. — ^[r. G. B. Heath, 

 a long and very varied series of I'eronea hastiana, bred from larv.'e col- 

 lected in S. Whales in an area of twenty square yards. Aberration of 

 P. NAPi. — Mr. R. W. Robbins, a ? I'icris napi with the tips of the 

 forewings exceptionally black, and the veins covered with black scales 



