26 



forms from Folkestone. Mr. Barrett mentioned several 

 instances, and said that he had taken the early form at 

 Pembroke. Mr. Adkin had taken all stages of a six-spotted 

 form early in June, and Mr. Frohawk's experience was 

 similar. It was remarked by several members that Z . tri- 

 folii did not always pupate near the ground. 



Mr. Carrington gave a short summary of the increase 

 and spread of Melanism during the last twenty years. 

 Black varieties of Tephrosia biundularia, Bork., Amphidasys 

 betidaria, L., and Phigalia pedaria, ¥h., were either exceed- 

 ingly rare or absolutely unknown a few years ago, whereas 

 of the first named no less than forty-three specimens were 

 taken last year by Mr. Hewett of York alone, while black 

 vars. of A . hetnlaria had even been found at Epping and in 

 Ireland. All these changes in species taking place within 

 our own lifetime could not but have a very large influence 

 upon the old idea of species being immutable. In fact, his 

 experiments with trout and salmon had forced upon him the 

 belief that the seven so-called species of Salmonidae were 

 but one. The undoubted ova of the salmon had been sent 

 to the Himalayas and had produced equally undoubted 

 ordinary brook trout. 



Mr. Brooks communicated the following note : — 



" A question was asked at the last meeting, December 

 13th, re the Florida orange being without pips or seeds, and 

 consequently being unable to multiply in the usual way. 



" In the first place, the Florida orange is a hybrid, and in 

 all probability raised from a hybrid parent on one side. 

 Therefore Nature refuses to go any farther in a direct line. 



" But in order to still improve the Florida orange, the 

 pollen would have to be removed to another kind with a 

 stronger constitution. 



"The little Otaheite orange is without seed or pips, being 

 also a hybrid." 



Mr. J. W. Tutt read a paper on ZygcEua ochsenheimeri, Zell., 

 and its varieties (printed in Abstract of Proceedings for 

 1894, p. III). 



