xlvi PEOCEEDINGS, 



and it was found to be still growing there. On a fence near the 

 second pit Mr. Arthur Lewis took the moth Anticlea badiata. 



Ascending the hill to Cribbs, the fields were crossed to Woodcock 

 Hill Kiln, where the Reading Beds and basement-bed of the 

 London Clay were seen. Just at the edge of the outcrop of the 

 Reading Beds a little pebble-gravel was seen on the Chalk, and 

 then another patch of it, on, and the cause of the formation of, 

 an isolated gorse-covered hill a little nearer Rickmansworth. The 

 gorse was on fire and a considerable extent of it had been destroyed. 



At Rickmansworth Mr. A. E. Gibbs took the moth Habrostola 

 tripartita, on a fence ; and in heads of Hypericum perforatum he 

 found larvae of the Tinea Bepressaria liturella, one of which 

 he successfully reared and it emerged in July. There was a 

 strong wind blowing which made the day very unfavourable for 

 entomologists. 



Field Meeting, 13th Mat, 1893. 

 BROCKET PAEK, WELWYN. 



At Ayot Station, the place of meeting, a small party of the 

 members met the Director, Mr. Hopkinson, who had walked from 

 St. Albans in the morning, and decided, owing to the intensely 

 hot weather, to abandon the first part of the programme, the 

 examination of sections of the Reading Beds and London Clay 

 in Ayot brickfields, and at once proceed to Brocket Park to seek 

 the shade its trees afford. 



Permission to visit private portions of the park having been 

 granted by Lord Mount Stephen, the path to the right was taken, 

 but a zealous keeper would not allow the party to enter the woods 

 here for fear of pheasants being disturbed, and it was not until 

 the house and gardens had been passed on the left that the first 

 wood was entered. Descending through this wood to the Lea, 

 the river was crossed by the old flint bridge, and the walk was 

 continued through the woods on the opposite side, and by Warren 

 Parm to Cromer Hyde, where tea was partaken of at the village 

 inn. 



Most of the party then again entered the park to see the 

 ornamental water and waterfall near the handsome stone bridge 

 over the Lea, and, returning to Cromer Hyde, walked across the 

 fields and through Symond's Hyde Great Wood to St. Albans ; 

 others drove to Hatfield Station. 



The only plants observed worthy of note were Euphorbia 

 amy ffdal aides, in Symond's Hyde Wood, and Puccinia malvacearum, 

 on the leaves of the mallow {Malva rotundifolia) at Cromer Hyde. 



The following Lepidoptera were seen or taken by Mr. A. E. 

 Gibbs, chiefly in Symond's Hyde Wood : — 



Ehopalocera (Butter/lies) . 



Pieris brassicse. Euchloe cardnmines. Ccenonympha pamphilus. 



,, rapfB. Arg-ynnis euphrosyne. Lycena icarus. 



„ napi, Yanessa io. Lyriclithus malvae. 



