2 The Irish Natiitalist. January, 



Society's cabinet in Manchester nniseiini. This the}^ did, con- 

 firming the identification. In returning the shells, they also 

 sent a set of this speci*es that J. R. Hardy had in his cabinet, 

 collected by Theophiliis Tucker and himself in 1870 in the 

 Grand Canal, about four miles from Shannon Harbour. This 

 was in King's Co., another county record, as the find had 

 never been published, both the collectors being unaware that 

 the species was an addition to the fauna of the country. 



QUO 



Fig. I. 



A. Bythinia Leachii^ jVlonasterevan. 



B. B. tentaculata,juv. 



C. B. Leachii, typical English specimens from Stafford canal. 



D. E. B. tentacidata, full-grown. D has deeper suture than typical 

 examples like E. 



F. Operculum of B. Leachii. 



G. Operculum of B. Unlacidata. 



H. Operculum of ^. teniaculata about half-grown. 



On his way home fromthe Cork Conference in July last, A. W. 

 Stelfox again visited the canal, this time at Sallins, in the 

 north-east of Co. Kildare, and found the shell quite common 

 there, much more so than at Monasterevan. This proved to 

 us that it was evidenth' widely spread, and that it would likely 

 be found all along the canal and its branches. I asked R. A. 

 Phillips, of Cork, to keep a look out for it, and on 19th Sep- 

 tember he wrote me that he had that da}^ collected it in the 

 canal at Mountmellick, in Queen's County. In October I went 

 down to the Grand Canal at Ltican, Co. Dublin (the Royal 

 Canal also runs close to the village and might repay a visit), 

 and the very first scoopful of material had a number of speci- 

 mens, mostly young, with a few of the common B. faiiaadata 

 also. I spent about twenty minutes there, and found that it 

 was even more plentiful than the latter, and was living among 

 the subaquatic moss Fo^itijialis antip) reiica, in about two to 

 four feet of water along the muddy margins of the canal. I 



