MOLLUSCAN INVESTIGATION IN ABERDEENSHIRE 203 



sandhills on Belhelvie golf-links, near the Black Dog Rock, 

 the original locality. Here the species and the variety were 

 found commonly as regards dead shells, but living ones were 

 scarcer. The band-formulae observed were lutea (12)3(45) 

 and (123)45. The species and the variety with band- 

 formulae (12)3(45), 1(23)45, 123(45), 1(23X45), and (123X45) 

 were also found commonly occurring on the banks of the 

 Don between the two bridges. The allied species, H. 

 nemoralis, was not found to occur in the district. 



Helicigona arbustorum. Common, but mostly immature, amongst 

 nettles, meadowsweet, etc., on the banks of the Don between 

 the two bridges, the vars. ftisca, marmorata, and conoidea 

 being noted along with the typical form. 



Helicella caperata. Common on the sandhills on Belhelvie golf- 

 links. 



Hygromia fusca. In Persley Den ; also on the banks of the Don 

 between the two bridges ; not common. 



Vallonia pulchella and Vallonia costata. Dead shells of both species 

 common amongst moss on the sandhills between Aberdeen 

 and the river Don. 



Pupa cylindracea. Scarce on the banks of the Don between the 

 two bridges ; common in Persley Den. 



Vertigo substriata. Common in boggy ground on Belhelvie golf- 

 links. 



Cochlicopa hibrica. Common on the banks of the Don between the 

 two bridges ; and very common on the sandhills between 

 Aberdeen and the river Don, the slender var. lubricoides being 

 here the prevalent form. 



Succinea putris. On the banks of the Don between the two bridges ; 

 scarce and immature. 



Carychium minimum. Common in Persley Den. 



Limncea truncatula. Common on boggy ground, Belhelvie golf- 

 links. 



Limncea peregra. Small pond in brick-yard near Bridge of Don ; 

 common. 



Planorbis crista and var. imbricata. In the same station, along 

 with 



Pisidiutn fontinale and 

 Pisidium pusillum. 



LI B R A R 



