196 STANDEN : MOLLUSCA OF PORTSALOX. 



made from some rejectamenta on the golf-links, not far from the 

 banks of a small river running through the sand-hills near Port- 

 salon. Large quantities of shells had been accumulated, includ- 

 ing several purely woodland species, and then blown along by 

 the wind and lodged in a sheltered hollow ; and this deposit, 

 dried and sieved, and then carefully sorted over, yielded many 

 valuable shells, notably Vertigos and Acme lineata. For the 

 most part the shells are in remarkably good condition and quite 

 as fresh-looking as living specimens. 



The way in which these collections of shells are formed in 

 the hollows of the sand-hills was not a little puzzling at first ; 

 but, being out one morning when a brisk wind was blowing, I 

 had the whole process satisfactorily demonstrated. Little 

 streams of shells, large and small, from the debris left high up 

 on the banks of the river by past floods, or from the surface of 

 the sand-hills generally, were trickling along through the scanty 

 herbage in a most extraordinary fashion, winding in and out 

 amongst the grass stems, uphill and down, until they were finally 

 precipitated into a deep hollow sheltered from the wind. With 

 the shells I often noticed weevils and other beetles being borne 

 along by the force of the wind. 



The following is a list of species collected. For convenience 

 of reference I have used the classification adopted by Dr. Scharff 

 in his list : — 



*Vi1:rina pellucida Mullen— Occurs on the golf-links, Port- 

 salon, at Kinny Lough, and in the old burial-ground at 

 Fahan, where some very large specimens were taken. 



*Hyalinia cellaria iMiiller. — Common everywhere, and espe- 

 cially abundant in burial-ground at Fahan. 



*H. draparnaldi Beck. — A few fine examples at Portsalon 

 and Fahan. 



*H. alliaria Miller. — Fairly common under stones at Port- 

 salon and Kinny Lough. 



J.C, vii.. July T893. 



