2S4 jOltRNAi, OF CONCHOLOGY. 



Pupa umbilicata, Vertigo pygtme a, Baica, Clausilla rugosa, Zua 

 lubiica, Bythinia tentaculaia, and Limnca peiegra ; but no slugs. 



From MoNAGHAN, sixteen species, sent by Mr. J. G. Milne 

 and Mr. W. F. de Vismes Kane: — Siiccinea putris, S. elegans, 

 Zonites cellarhis, Z. glciber, Z. niiidulus, Helix nemoralis, If. 

 hispida, H. rotundixta, Pupa umbilicata^ Claiisilia rugosa, Zua 

 lubrica, Spharium ccrneum, Bythi^tia tetttaculafa, Limncea 

 peregra, L. stagnalis, and Planorbis carinatus. 



From Armagh, seventeen species, all sent by Mr. J. G. 

 Milne and Rev. H. W. Lett: — Avion ater, A. subftiscus, Limax 

 agrestis, L. maxitnus, Zonites cellarius, Helix aspersa, H. 

 nemoralis, H. hispida, H. rotundata, Vertigo pyg7ncea, Clausilia 

 rugosa, Byiiiinia tcntaculata, Limncea peregra, L. stagnalis, L. 

 palustris, Planorbis carinatus, and P. coniplanatus. 



THE VARIATION OF LIMNCA PEREGRA (xVIiill.). 



By JOHN W. TAYLOR, F.L.S., 



Membre Honoraire de la Soci^td Malacologique de France, &c. 



(Read before the Concho'.ogical Society, Nov. 5th, 1890.) 



This species is perhaps the most variable of our fresh- 

 water shells, and also one of the most widely dispersed, being 

 found not only in the British Isles, but inhabiting according to 

 some authorities almost every other part of the globe ; it is, 

 however, interesting and somewhat remarkable that it has not 

 yet been satisfactorily shown to inhabit the continent of 

 America. Dr. Gwyn Jeffreys in " The Mollusca of Europe, 

 compared with those of Eastern North America " published in 

 1872, expressed the opinion that Liinncea columella Say was 

 identical with the present species, and other conchologists have 

 referred Limncea catascopiuin and other forms also to Limntza 

 peregra either as synonyms or varieties. These views are how- 



J.C, vi., Oct., 1S90. 



