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ten were tridens ; he could not point out any characteristic 

 difference ; but was of opinion that if a long series of the two 

 species were studied, it was not difficult to separate them. 

 The best way to obtain a series of tridens was to obtain ova 

 from the females of the imagines taken, and when the larvae 

 emerged it was easy to tell whether they were those of the 

 species required. 



Mr. West (Greenwich) said he used to obtain the larvae of 

 A. tridens from Whitethorn round Lewisham and Lee. 



NOVEMBER 22nd, 1888. 



J. T. Carrington, Esq., F.L.S., Vice-President, in the Chair. 



Messrs. W. G. Dawson, F. E. Brown, A. Marshall, and J. 

 Katz were elected members. 



Mr. J. Jager exhibited Agrotis prcecox, L., from Glamorgan- 

 shire, obtained by shaking the sand crests ; also two speci- 

 mens of Acidalia marginepimctata, Goze., taken at Sanders- 

 foot, S, Wales, at light, these examples were of a dark slatey 

 colour, with indistinct markings. Mr. Carrington said the 

 Liverpool collectors obtained a form of this species from 

 the Isle of Man which was even blacker than those taken 

 by Mr. Jager ; it was interesting that this form should have 

 been obtained from S. Wales, the geological formation being 

 altogether different from that of the Isle of Man. 



Mr. Nevinson exhibited Leucania putrescens, Hb., from S. 

 Wales, and two specimens of HeliotJiis peltigera, Schiff., 

 imagines of the former were taken on the 15th, and larvae 

 of the other on the i8th August, the imagines emerging on 

 the 17th September. 



Mr. R. Adkin exhibited Pieris 7tapi, L., from West Ireland, 

 approaching var. bryonies, Och., Lyccena icarns, Rott., Ellopia 

 prosapiaria, L., from English and Irish localities, Ematnrga 

 atomana, L., Larentia didymata, L., Eupithecia nanata, Hb., 

 and Hypsipetes sordidata, Fb., from English, Irish, and Scotch 

 localities, and remarked that with the exception of the form 

 of P, napi approaching bryonice they were alike from all 

 localities. 



Mr. Tugwell exhibited two specimens oi Margarodes union- 

 alis, Hb., from Kingsdown, Kent, 1877, ^^ flowers of Eiipa- 



