NOTES 167 



Olausilia plicata, Drap., in Sutherland. In looking through 

 the Conchological Society's collection recently I came across a 

 glass tube containing two unidentified examples of Clausilia, 

 labelled " Clausilia, Dornoch, E. Sutherland." I was at once 

 struck with the remarkable aperture of the specimens, and on 

 comparing them with Clausilia plicata from Gottland, Sweden, 

 and other localities, I found them to be that well-distributed European 

 species. 



The specimens are part of a collection of Sutherland shells 

 presented to the Society by W. Baillie, of Brora (See Journ. of 

 Couch., vi., 272 ; vii., t6S, 170, and 173). 



It is well known that Baillie was in the habit of colonising 

 various southern species, especially in the lower part of basin of 

 the river Brora, and in the Journal of Conchology (iv., 160; 

 v., 192; vi., 15) he gives the names of the forms experimented 

 with. Amongst these, however, the only extra-British species 

 is Clausilia parvula, from Normandy. The fact of CI. plica/a 

 not being given in the lists has led me to write this note, in 

 the hope of soliciting further information from Scottish concho- 

 logists. 



Though the occurrence of this species in the extreme north of 

 Scotland looks like introduction, it is not unreasonable to assume 

 the possibility of it actually being indigenous in that region. This 

 problem, therefore, needs close investigation, for, as pointed out 

 by J. W. Taylor and others, there is the possibility of finding in 

 the Scottish Highlands other continental species, such as Acauthinula 

 harpa and Pyramidula ruder at a, which so far have not been observed 

 living in these islands, though the latter is a well-known British 

 Pleistocene species. Both this species and A. harpa occur to-day 

 in Scandinavia, and when one remembers that Scotland, and what 

 are now its outlying islands, remained united with Scandinavia 

 down to post-glacial times, it does not seem impossible for the 

 above and other species to have spread from Scandinavia and 

 left relics of their existence in Scotland. J. Wilfrid Jackson, 

 Manchester Museum. 



Helicella gigaxii in Haddingtonshire. In a list of the 

 mollusca of North Berwick {Journ. of Couch., vi., 1889, pp. 1-5) the 

 late Rev. J. M'Murtrie records the occurrence of Helix caperata, 

 and its var. major. The specimens on which this list was based 

 were presented by the author to the Conchological Society, and on 

 inspecting the collection recently I was interested to find that the 

 supposed H. caperata and var. major were undoubtedly the H. 



