( cxxxviii ) 



perfectly certain determination required fuller material, which 

 it was hoped would soon be received from Dr. Carpenter. 



Prof. Poulton had also received the following interesting 

 note in a letter written on September 21st. The observation, 

 as Dr. Carpenter said, threw light upon a difficulty which has 

 often been stated. 



*' I caught a very nice initial variety of Ps. terra the other 

 day. It had a very slight yellow suffusion of the black 

 ground-colour along the costal margin of the forewing, and 

 the black bar between the sub-apical and hind-marginal tawny 

 areas was slightly thinned away. This specimen, however, 

 looked distinctly different, both at rest and on the wing, which 

 tends, I think, to show how the smallest vai-iations may have 

 selection value. This is always rather a stumbling block, so 

 it was nice to see it actually exemplified." 



The Cocoons op Epicephala ohalybacma, Meyr. — Prof. 

 Poulton showed an enlarged photograph of the cocoons of 

 E. chalyhacma upon the leaves of Tamarind, Poinciana pulcher- 

 nma, taken at Pusa on May 31st, 1911, by Mr. T. Bainbrigge 

 Fletcher. The cocoons with their spheres were very beauti- 

 fully and clearly reproduced. The photograph had been taken 

 for Mr. E. Meyrick, F.E.S., who had sent it to Prof. Poulton 

 for exhibition to the Society. 



A Richly-coloured Example of Planema arenaria, 

 E. M, Sharps, from the Sesse Islands in the Victoria 

 Nyanza. — Prof. Poulton exhibited a male specimen of PI. 

 arenaria, taken July 15, 1912, by Dr. G. D. H. Carpenter on 

 Bugalla, one of the Sesse Islands. PI. arenaria had been 

 shown by Dr. Karl Jordan to be a pale eastern geographical 

 race of the fulvous PI. consanguinea, Auriv., of the tropical 

 west coast. It was therefore interesting to find such forms, 

 tending towards an intermediate tint, in an island in the 

 Victoria Nyanza. Dr. Carpenter had observed that they 

 were not uncommon. 



The Effect of Hot and Cold Climate upon the Colours 

 of Chrysophanus phlaeas, L.— Prof. Poulton exhibited 

 thirty-seven examples of C. phlaeas, captured on the same 

 bank at Cerne Abbas, Dorset, in the hot August of 1911 and 

 in the cold August of 1912, by Dr. R. C. L. Perkins. Eight 



