The Irish NaUiralist . 



August 



analysed to contain the following species : — Hyalinia radia- 

 tula, Zonitoides nitidus, Hygromia hispida, Vallonia pulchella, 

 Helix nemoralis, Succinea Pfeifferi, Carychium minimum, 

 Limnaea fereger, L. stagnalis, L. palustris, L. truncatula, 

 Amphipeplea glutinosa, Planorhis albus, P. crista, P. carinatus, 

 P. umhilicatus, P. vortex, P. leucostoma, P. contortus, Physa 

 fontinalis, Aplecta hypnorum, Bithynia tentacidata, Valvata 

 piscinalis, V. cristata, Neritina fiuviatilis, Sphaerium cor- 

 neum, Pisidium amnicum, P. suhtruncatmn, P. pusillum, 

 and P. casertanum. This seems to be a deposit of drift 

 shells formed at a time when the river was wider than it is 

 at present. All the species still live in the vicinity. 



A noteworthy feature in connection with the molluscan 

 fauna of South Galway is the presence so far west of several 

 species such as Helix hortensis (var. olivacea), Ena ohscura, 

 Amphipeplea glutinosa, Planorhis carinatus, Bithynia Leachi, 

 Sphaerium lacustre, and Pisidium amnicum whose head- 

 quarters in Ireland are decidedly eastern. 



Bithynia leachi reaches here the extreme western limit 

 of its geographical distribution. 



Species absent from the list, but recorded from one or 

 more of the adjoining counties and vice -counties are Hygro- 

 mia fusca, H. granulata. Vertigo Lilljehorgi, V. angustior, 

 Succinea ohlonga, Paludestrina ventrosa, and Margaritana 

 margaritifcra. Suitable habitats for all or most of these 

 occur and further investigation may reveal the presence 

 of some of them here also. 



Pisidia have been collected in many localities besides 

 those mentioned, but the only specimens recorded here, 

 except in the case of P. amnicum, are those which have been 

 identified by Mr. B. B. Woodward, f.l.s., whose kindness 

 in thus assisting me I gratefully acknowledge. 



My thanks are due also to Mr. A. S. Kennard, f.g.s., 

 for notes on collections of shells sent him from numerous 

 localities, to Mr. A. W. Stelfox, m.r.i.a., and Mr. J. W. 

 Taylor, of Leeds, for assistance in identifying closely- 

 alhed species and abnormal specimens, and to the late Dr. 

 George J. Fogerty, of Limerick, who was my companion 

 and helper on many collecting expeditions in South Galway 

 and elsewhere. 



