ao2 THE SCOTTISH NATURALIST 



var. grisea, in Persley Den ; both forms also on the banks 

 of the Don between the two bridges, and in boggy ground on 

 Belhelvie golf-links. 



Vitrina pellucida. Common, but living examples all immature, on 

 the south bank of Don between Bridge of Don and 

 Balgownie, amongst moss on the sandhills between Aberdeen 

 and the Don, and in Persley Den. 



Hyalinia cellaria. Common, with its var. complanata, on the banks 

 of the Don between the two bridges. 



Hyalinia helvetica. In the same station, but scarce. 



Hyalinia alliaria. In the same locality, fairly common ; also 

 amongst moss on the sandhills between Aberdeen and the 

 Don, and in Persley Den ; in these two places not 

 common. 



Hyalinia nitidula. Scarce in Persley Den, and on the banks of 

 the Don between the two bridges. 



Hyalinia pura. The vars. nitidosa and margaritacea in Persley Den, 

 scarce ; and var. nitidosa on the banks of the Don between 

 the two bridges, scarce. 



Hyalinia radiatula. Found in boggy ground on the Belhelvie 

 golf-links ; on the banks of the Don between the two 

 bridges ; and in Persley Den ; but scarce everywhere. One 

 example of var. viridescenti-alba in the last-named locality. 



Hyalinia crystallina. Fairly common in Persley Den ; scarce on 

 the banks of the Don between the two bridges. 



Hyalinia fulva. In both the stations for the last-named species, 

 but scarce. 



Punctum pygmceiim. In Persley Den ; scarce. 



Pyramidula rotundata. Abundant on the banks of the Don 

 between the two bridges. 



Acanthinula aculeata. Amongst Great Hairy Woodrush in Persley 

 Den ; scarce. 



Helix aspersa. Common, with var. undulata, amongst nettles, etc., 

 on the north bank of the Don between the two bridges ; 

 mostly immature. 



Helix hortensis. One of the objects in view was the verification of 

 William Macgillivray's record of his var. arenicola, on the 



