67 



iilopos (Brazil), in which the white markings are represented by 

 mere indications ; P philenor ab. acauda (Mexico), in which the 

 tails are wanting. 



Mr. Newman reported that Agriadea coridon, in its usual habitat 

 on the Chiltern Hills, was this year practically extinct, and that 

 although collectors in abundance had frequented the locality in 

 recent seasons, he did not consider the scarcity was due to over- 

 collecting. In his opinion this was due to the attacks of ichneu- 

 mons, for out of a large number of larvae of A. coridon collected in 

 the spring more than 90% were attacked. His experience of Koyston 

 had been much the same ; he scarcely saw 50 in the course of a 

 mile. In some parts of the district, however, the species was more 

 abundant than he had ever seen it ; quite a hundred pairs could be 

 counted at a time. He remarked that in Kent there had been an 

 abnormal scarcity of Polyommatns icanis in both broods, whereas 

 Plebeiiis (.egon, which last year had been abnormally common, this 

 year had been absolutely abundant ; Agriades thetis was now abun- 

 dant, but the earlier brood had been scarce ; Argynnis aglaia was in 

 great abundance. All the Puiralidic [Thedida) had been abundant 

 also, especially Strymon pruni. The sawfly of the " black " poplar, 

 which last year had practically stripped his trees of leaves, was this 

 year curiously conspicuous by its complete absence. 



Mr. Barnett said that P. icariis had been very scarce in Surrey. 



Mr. F. M. B. Carr reported that larvte were very scarce this year. 



Mr. Sperring's experience had been contrary to that of many 

 members, he having met with hundreds of Pieris since the Jast 

 meeting. 



SEPTEMBER Qth, 1919. 



Field Meeting — Wimbledon. 



Conductor, Mr. E. Step, F.L.S. 



The route taken lay between Cjesar's Camp and Farm Bog to 

 Warren Farm, thence through the woods to Beverley Plain, and by 

 Stag Ride and Queensmere to Windmill Road. 



Beating did not yield anything like so good results as on the 

 previous visit, which was a month later in the year. .Lists of 

 captures have not yet come in, but the insects obtained included 

 larvae of Snierinthus ocellatus on sallow, Dasychira pndibunda and 

 Cabera pnsaria. 



