92 



gave an account of his observations on the mosses of Witherslack, 

 where the race wansei/i is the dominant form, illustrating his remarks 

 by a map of the areas referred to. (See " Proc. Ent. Soc. Lon.," 

 1919, p. Ixiv.) 



Mr. Buckstone exhibited his series of P. ici/on as follows : —Chalk 

 Hills, above Otford, Shoreham, etc., a large pale form ; Oxshott, 

 the type with several dwarfs and two females with blue scales, the 

 undersides of both sexes showing a fair amount of variation both in 

 spots and general coloration; Wisley, including a deep black female; 

 Aldershot, fairly typical ; Swannington, Norfolk, a male with the 

 spots on the underside very small or missing ; Witherslack, var. 

 masseyi. 



Mr. A. W. Mera exhibited his series, including var. inosseiji, and 

 also a female from Ipswich with the bases of all the wings blue. 



Mr. Newman exhibited long series from Eynsford and other 

 localities. He noted that the form with yellow lanules averaged 

 about two per 1000, and rather in the males than the females. On 

 the Kent hills the species had all but disappeared three times in the 

 course of the last thirty years, with periods of wax and wane. 

 Extremely blue females were about one in 500. In good years 10% 

 would be shot with blue. He had noticed that the hotter the sunny 

 period the more blue the females. The imagines were frequently 

 observed to be attended by ants when drying their wings. 



Mr. Sperring exhibited the Oxshott form, and a short series with 

 orange lunules. 



Messrs. B. S. Williams, A. E. Tonge, and B. Swift exhibited series 

 from Eynesford,' Holt Norfolk, and Newton Abbot respectively ; the 

 last named showed an extremely dark female. 



Mr. Buckstone, referring to the periodical scarcity of butterflies, 

 said that at Shere A(jriades coiidon had been very scarce this year 

 and quite three weeks late in appearance. 



Mr. R. Adkin remarked on the proneness of the Li/cce)iid(F to run 

 into local forms, and also to remain on a very restricted space. For 

 instance, he had noted a specimen of Aijriades tlietis, easilv recog- 

 nisable by a damaged wing, day after day frequenting the same 

 small space. He had similar experience with Pob/oiiniiatits icants 

 and A. coridon. Such a habit would tend to produce distinctive 

 local races. 



Mr. Lister, in his further remarks, asked what was the actual 

 cause of the peculiar mafiseiji form ? There were numbers of Gulls 

 nesting on the ground. Would their presence be a cause indirectly 



