266 HELICIM!. 



but only hitherto noticed in a few localities. These 

 are as follows : Singleton near Swansea, and the rejec- 

 tamenta of the Avon River at Bristol (J. G. J.) ; Tenby 

 (Webster) ; Battersea fields (Stephens) ; Co. Clare 

 (Humphreys); and Connemara, Co. Gal way (Warren). 

 Mr. Brown has noticed it among the shells in the upper 

 tertiary deposit at Copford. Abroad it has been found 

 in the North, East, and South of France, as well as in 

 Germany, Switzerland, and Lugano. Near Villeneuve, 

 in the upper Valley of the Rhone, I observed it to be 

 tolerably plentiful in a wet meadow or piece of land by the 

 side of the road leading from Vevay to St. Maurice, as 

 well as in similar situations near Lausanne and at Chable 

 in the Valley of Bagne. The first-mentioned piece of 

 land had lately been mown ; and consequently these tiny 

 shells were more easily detected. I have thus specially 

 noticed these foreign localities, to indicate the kind of 

 station in which this rare shell may be sought for in 

 this country. 



The animal is rather slow in its movements and carries 

 the shell upright on its back. 



The shell differs from V. pusilla in its much smaller 

 size and being proportionally narrower, in the distinct 

 and strong transverse strias, and especially in the shape 

 of the mouth, which is triangular and very narrow, 

 instead of being subquadrate and open (which is the case 

 in V. pusilla), as well as in the number, shape, and 

 position of the teeth. The single labial tooth in the 

 present species is situate opposite to the space between 

 the two teeth in the columella, and would lock into 

 them if the two sides were in contact, like the hinge teeth 

 of many bivalve shells. An excellent and enlarged 

 figure of the shell is given in ' Wiegmann's Archiv ' for 

 1838, pi. iv. f. 6. 



