92 



with remarkable cases of mimicry among the latter. He 

 made some observations on a fight between a red and a 

 brown species of ant, which he had watched in progress for 

 more than a week, and he referred to a species of wasp 

 which habitually hunted large spiders, and carried its prey 

 with great difficulty up the walls of houses to its nest in the 

 roofs. 



Mr. Pearce exhibited a curious fasciated stem of the 

 common Auricula, in which a flower-stem and a leaf-stalk had 

 anastomosed and broadened out, forming a natural " button- 

 hole." 



Mr. Edwards exhibited several species of the Nymphaline 

 genus Prcpona and various species and races of the agamcm- 

 non group of the genus Papilio. 



Mr. Turner exhibited a cactus, Opnntia viicrodasys, having 

 its stems covered with very numerous bunches of short, close- 

 set, golden yellow spines. He also showed a specimen of 

 the harlequin beetle, Acrosiims longimaniis, from Trinidad. 



Mr. Sich read a paper on " The Lesser British Lepidop- 

 tera," and exhibited a large number of species typical of the 

 various groups in the so-called Tineina section. 



MAY ^th. 1902. 



Mr. F. NoAD Clark, President, in the Chair. 



Messrs. Harrison and Main exhibited a very varied series 

 of Tccniocampa incerta, from Delamere Forest, Epping Forest, 

 and the neighbourhood of Liverpool. 



Mr. H. Moore exhibited two species of the cegeus group 

 of Papilio, viz. P. ptolycJms {^ and ?) from the Solomon 

 Islands, and P. erccthus from New Guinea. 



Mr. Hewitt exhibited three species of land Mollusca, viz. 

 Azeka tridens and white var., from near Keston ; Balea 

 perversa, from Downe ; Clausilia laininata and white var., 

 from near Keston. 



Mr. D. J. Scourfield, F.R.M.S., gave an address on " Lakes 

 and their Scientific Investigation," and illustrated his remarks 

 by diagrams and references to various works. A discussion 

 took place (see page 61). 



MAY 22nd, 1902. 



Mr. F. NoAD Clark, President, in the Chair. 

 Mr. Lucas exhibited a specimen of the rare plant Leucojnni 



