( 6 ) 



Professor Poulton said that he had submitted Mr. Leigh's 

 paper to Mr. G. A. K. Marshall, who had replied as follows : — 



London, Oct. 8, 1908. 



" Leigh's results with Charcixes neanthes are extremely 

 interesting, but I am not at all surprised to hear of them. 

 I have always been struck by the very close relationship 

 of this form to zoolina, and at one time thought they might 

 -be seasonal forms one of the other ; but such dates as I 

 could obtain did not seem to quite agree with that idea." 



Professor Poulton observed that the far more cryptic 

 under surface of neanthes, together with its general colouring, 

 suggested a dry-season form. He had asked Mr. Marshall 

 for his experience of the duration and succession of the wet 

 and dry seasons in Natal, and his friend had kindly supplied 

 the following account : — 



The early rains begin about mid-August and the wet 

 season proper in mid-September, continuing until mid-March. 



[Ixvi 

 Then follows a month of showers until mid-April, when the 

 dry season proper begins. In Durban showers are liable to 

 occur occasionally in the dry season. 



Mr. Roland Trimen, F.R.S., gives in his " South African 

 Butterflies," December, January, April to August, and 

 especially May, as the times of appearance of neanthes in 

 Kaffraria Proper, and for zoolina in the same locality, autumn, 

 and not after the beginning of April. 



The following dates of capture of these two forms in 

 various localities have been copied from the labels accompany- 

 ing the specimens in the Hope Department. 



NATAL. 

 Captured by G. A. K. Marshall at and near Durban, Natal. 

 Durban April 4, 1896 zoolina S • 



Malvern, 800 ft. March 10, 1897 neanthes S- 



„ „ March 27, „ „ 6- 



„ „ April 1, ,, „ 6. 



Durban May 2, ,, ,, c?. 



,. May 2, ,, „ c^. 

 May 9, 



o 



