166 Proceedings of the Royal Physical Society. 
described, but has been observed in the Marine Post-Tertiary 
deposits of the Clyde, ete. 
In its living state, it is probably one of the most widely 
distributed of the Helices in Scotland, and is authenticated 
from twenty-six counties in the “ Census.” 
Helix ? concinna (Jeffreys). 
Helix concinna, Jeff., in Linn. Trans., vol. xvi., p. 336. 
», hispida, var. conctnna, F. and H., vol. iv., p. 70, pl. exviii., 
figs. 2, 3. 
»,  concinna, Jeff., op. cit., vol. i., p. 196; vol. v., pl. xii., fig. 2. 
ne “5 Roebuck, op. cit., p. 467. 
Shells apparently belonging to this species were of fre- 
quent occurrence in all the deposits at Elie described in this 
paper. 
Helix concinna is recorded in the “Census” from fourteen 
counties. 
Helix pygmea (Draparnaud). 
Hglixz pyymea, Drap., Tabl., p. 93, and Hist., p. 114, pl. viii., figs. 8-10. 
FF 3 F. and H., vol. iv., p. 83, pl. exxi., figs. 9, 10. 
Ma a Jeff., op. cit., vol. i., p. 223; vol. v., pl. xiii, fig. 7. 
7 _ Roebuck, op. cit., p. 472. 
Only a few specimens of this species were observed in the 
material from the High Street deposit; owing to its minute 
size it is difficult to observe, and this may account for 
its not having been previously recorded from the ancient 
lake deposits. 
As a living species it is widely distributed but not very 
common. It is recorded from seventeen counties in the 
“ Census.” 
Helix pulchella, Miiller. - 
Helix pulchella, Miull., Verm. Hist., pt. ii., p. 30. 
RA =F F. and H., vol. iv., p. 78, pl. cxix., figs. 9, 10. 
ay a Jeff., op. cit., vol. i., p. 224; vol. v., pl. xiv., fig. 1. 
5 5 Roebuck, op. cit., p. 473. 
This species was obtained in all the deposits at Elie and 
in the Kirkland marl. 
