The Ancient Lake of Elie. 161 
being recorded from thirteen different counties in the 
“ Census.” 
Planorbis spirorbis (Miiller). 
Planorbis spirorbis, Miill., Verm. Hist., pt. ii., p. 161. 
_ a F. and H., vol. iv., p. 159, pl. cxxvii., figs. 9, 10. 
if i Jeff., op. cit., vol. i., p. 87; vol. v., pl. v. (suppl.), 
fig. 6. 
a 45 Roebuck, op. cit., p. 486. 
This Planorbis occurred in only one of the deposits here 
described, viz., “The Crane Peat,” and does not appear to 
have been observed in any of the Ancient Lake deposits 
already referred to. 
As a living species it is widely distributed, and is recorded 
from thirteen counties in the “ Census.” 
Planorbis contortus (Linné). 
Helix contorta, Linn., Syst. Nat., ed. xii., p. 1244. 
Planorbis contortus, F, and H., vol. iv., p. 160, pl. exxvi., fig. 3. 
pe ae Jeff., op. cit., vol. i., p. 94; vol. v., pl. vi. (suppl.), 
fig. 4, 
= ae Roebuck, op. cit., p. 487. 
In the same deposit as the last. This species has already 
been recorded from Elie in the Proceedings for 1889-90. The 
deposit described in that paper probably belongs to the same 
Ancient Lake. 
It is recorded as recent in the “Census” from sixteen 
counties. 
Physa hypnorum (Linné). Physa, 
Lamarck. 
Bulla hypnorwm, Linn., Syst. Nat., ed. xii., p. 1182. 
Physa hypnorum, F,. and H., vol. iv., p. 143, pl. exxili., figs. 6, 7. 
Fy ij Jeff., op. cit., vol. i., p. 26; vol. v., pl. vi. (suppl.), 
fig, 5. 
oe iY Roebuck, op. cit., p. 488. 
This species was observed in material from two of the 
deposits described in this paper, viz., Bank Street and 
High Street. Physa hypnorwm does not appear to have been 
VOL. XII. . L 
