JOURNAL OF CONCHOLOGY. 203 



LIST OF MOLLUSCA OF PRESTON CANDOVER, 



NORTH HANTS. 



By H. PUREFOY FITZGERALD. 



The following is a list of the Land and Fresh-water Mollusca 

 found at and around Preston Candover in North Hants. 



North Hants is one of the counties which has never been 

 properly examined as regards the Mollusca. The part of the 

 county in which are found the species named in the following list 

 lies between Basingstoke and Alresford, the Fresh-water Mollusca 

 being taken from the river Itchen, not far from where it rises, so 

 that only a small portion of North Hants has been examined, 

 and I am afraid that it will be some little time before the whole 

 vice-county is thoroughly searched, as it is almost too much for 

 one person to do without any help. The remarks are based 

 simply on my own observations, and some, which I have said are 

 scarce, may have been overlooked. There may even be, and 

 most likely are, a few more species which I have not come across. 

 The varieties have nearly all been examined by Mr. J. W. Taylor. 



Helix pomatia only occurs, as far as my knowledge extends, 

 in three or four fields in one locality in North Hants ; the var. 

 albida I believe to be owing to the age of the snail, as I have 

 never seen a young specimen colourless. As to H. aspersa var. 

 zonaia, I have observed several dead shells, but up to the present 

 time only one live specimen. I have not mentioned the 

 Limacidse in the list as I hope to treat upon them in a separate 

 paper. 



1. Pisidium amnicum (Miill.). Common. 



2. P. nitidum Jen. Frequent. 



3. P. pusillum (Gmelin). Frequent. 



4. Bythinia tentaculata (L). Common. 



5. Do. var. albida Rimmer. Scarce. 



6. Valvata piscinalis (Miill.). 



Do. var. depressa C. Pfr. Scarce. 



