PROCEEDINGS OF THE SOCIETY. 82 



July. Some very curious varieties wanting the ringlets on the 

 under surface have been taken. 



Chortobius Pamphilus. Very abundant in the Warren from 

 June to September. 



Thecla rubi. On the Warren, near " the long pond ;" June. 



Polyommatus Phloeas. Common on the Warren and Downs ; 

 August. 



Lycmia Ages lis. Common on the Warren ; ]\Iay and 

 August. 



Lycoena Alexis. Common ; May and July. 



Lycana Adonis. Abundant on the Downs to the east ; May 

 and August. 



Lycana Corydon. Abundant on the Warren ; August. 



Lyccena Alsus. Warren and East Downs ; May and August. 



Lyccena Argiolus. Both broods occur sparingly on the 

 Warren, where it, doubtless, feeds on ivy. 



Syricthus alveolus. On the Warren ; May and August. 



Thanaos Tages. Abundant on the Warren ; May and 

 August. 



Hesperia Sylvanus. Abundant in the Warren ; May and 

 August. 



Hesperia comma. I have met with this skipper on the cliffs 

 towards Dover. 



Hesperia li?iea. Abundant, chiefly in moist places, in the 

 Warren ; June and July. 



PROCEEDINGS OF THE SOCIETY. 



June \zth. Members met at No 2 Tower, and H. B. 

 Mackeson, Esq., F.G.S., gave an interesting and instructive 

 lecture on the Geology of the locality, illustrated by large 

 diagrams. Shewing a section he explained the formation of 

 each bed, and pointed out where each cropped out — the Chalk, 

 Upper Greensand, Gault, and Lower Greensand. No. i. 

 Tower, stands nearly at the foot of the Chalk ; No. 2, on 

 Upper Greensand; and No. 3, on Gault. By means of 

 another section he showed in what order the formations would 

 appear in travelling westward, and how the clay formed 



