Stelfox — List of Land and Freshivater MoUiisJcs of Ireland. 69 



the genus ( V. pellucida) ; but it appears to have several close allies on the 

 Continent, and after being first referred to the Vitrina dongata of 

 Draparnaud by Mr. Taylor, it was afterwards referred to V. pyrejidica 

 Fer. by the Eev. E. W. Bowell. In describing his Hyalinia hibernica 

 Mr. Kennard gave the following reason for making a new species : " that the 

 Irish shell was certainly not 21. cellaria of Miiller." That is the point, of 

 course, on which I do not altogether agree with Mr. Kennard. He 

 has, however, certainly drawn the attention of conchologists in general to 

 the fact that, in this island, there exists a form of Hyalinia cellaria which 

 differs materially from the type of Muller and the form which is usually 

 met with in the south-east of England. Had Mr. Kennard desciibed the shell 

 as a mere variety of such a variable species as ff. cellaria, none would have 

 more than glanced at his words, as unfortunately the term " variety " has 

 been used to describe such trifling variation that there is now little meaning 

 attached to it. 



Fourteen land and fifteen freshwater species which are known to live in 

 Britain are still unrecorded for Ireland. Of these, twelve of the former and 

 all the latter (except the two endemic species — Limnaea burnetii and Palu- 

 destrina taylori) have mainly a central range in Europe, and therefore belong 

 to that group in which Ireland is known to be poor. The two exceptions in 

 the list of land-species are Limax tenellus and Hygromia revelata. The latter 

 belongs to the Cornish branch of the Lusitanian group. There seems there- 

 fore, in my opinion, yet a chance that this species may occur somewhere along 

 the east coast of Ireland, the head-quarters in this country of Helix 2naana, 

 Vitrina liibernica, and several terrestrial isopods which appear to belong to 

 this same group. Limax tenellus, if in Ireland, is more likely to occur in 

 the north or north-west. 



In the preparation of this list I have received great help from Dr. Scharff, 

 who has handed over to me all the notes which he had been collecting for 

 many years for the purpose of a similar paper, which he had unfortunately 

 to abandon to take up other work. The bibliography, which will be found 

 to be very full, was also commenced by Dr. Scharff, but has been 

 completed by Mr. Welch after much arduous work. Had it not been for 

 the assistance of the latter, upon which I could always count, I should not 

 have dared to undertake the completion of this paper ; and, although I alone 

 am to blame for any erroneous opinions which have been expressed in the text, 

 Mr. Welch must be given a large share of the credit of the compilation of it. 

 To Mr. K. A. Phillips I owe also my greatest thanks for notes and records, at 

 least half of those from the southern counties being due to his careful work ; 

 Mr. P. H. G-rierson has contributed a great deal of information on the 



