139 



JANUARY Uth, 191(3. 

 Mr. A. E GiBBS, F.L.S., F.E.S., Vice-j^resident, in the chair. 



The death of Mr. A. C. Morris, of Norwood, a life member, was 

 announced. He was killed in action in France. 



Mr. Leeds exhibited an exceedingly rare form of gynandro- 

 morphism shown in a specimen of Ayriades coridon, taken at Roy- 

 ston, Herts, in 1915. Blue markings were present on both the 

 upper wings only, the lower wings being completely female in 

 colour. The female element predominated and the ground colour 

 was strongly dark. Androconial scales were detected on both fore- 

 wings. The fringes were dusky and the underside rather darker 

 than usual. Mr. Leeds also exhibited a series of undersides of the 

 same species to show the variation in general ground colour of the 

 Hertfordshire races. 



Mr. C. B. Williams pointed out that it would be interesting to 

 know if dorsal-ventral gynandromorphism occurred in the Lepi- 

 doptera. 



Mr. A. E. Gibbs exhibited an interesting letter in his possession 

 written by Henry Doubleday to Bernard Pift'ard, giving information 

 as to the famous Hewitson collection. 



Mr. Buckstone exhibited two small and dark suffused specimens 

 of Polijploca flavicornis bred from full-fed larvae taken at Peaslake, 

 Surrey, and a curious semitransparent example of Gonndontu biden- 

 tata bred from an ovum laid by a female taken at Horsley, Surrey. 



Mr. Buckstone also exhibited several short series of Zi/i/t/na 

 trifolii taken in several Surrey localities, and contributed the follow- 

 ing note : — 



" At Swinley Woods, Ascot, the larvte of Zijuirna trifolii spin 

 up close to the ground, but a few cocoons may be found high up on 

 grass, heather and low shrubs. From two dozen of such cocoons I 

 bred the four female specimens exhibited. The remaining cocoons 

 produced a species of Diptera of which I show a specimen. For 

 comparison I have placed in the box specimens of Z. trifolii captured 

 at the following places — Swinley Woods, Pickett's Hole and Esher. 

 Also a few specimens of Z. lonicera;. It will be noticed that one of 

 the bred specimens of Z. trifolii has narrower and more pointed 

 wings than have any of the Z. lonicera. With regard to the 

 antennae those from Pickett's Hole have the shortest antenna', and 

 those from Esher the longest." 



Mr. A. E. Gibbs exhibited series of— 



1. Melanarijia syllius, Hbst., from France, Central Spain, and the 



