Fig. 1, 2. LYMN^A elongatus. 
LvMNiEA elongatus, Brown's MSS. 
Lyuineus elongatus. Drop. Moll. p. 53, pi. 3, fig. 3, 4. 
Helix octanfracta, Mont. Test. Brit. p. 396, pi. 11, fig. 8. — Linn. Trans, viii. p. 211. 
Fig. 12, 13. LYMN^A fossaria. 
Lymnjea fossaria. Brown's MSS. 
Lymnaea minuta. Lam. Syst. vi. partie 2, p. 162. 
Hebx fossaria, Mont. Test. Brit. p. 372, pi. 16, tig. 9 Brown in Ency. Brit. vi. p. 461. 
Fig. 3, 4. Variety. 
Fig. 34, 35. SUCCINEA oblonga. 
SuccxNEA oblonga. Lam. Syst. vi. partie 2, p. 135 — Drap. Moll. p. 58, pi. 3, fig. 24, 25. 
Fig. 41, 42. SUCCINEA amphibia. 
SucciNEA amphibia. Lam. Syst. vi. partie 2, p. 135 — Drap. Moll. p. 58, pi. 3, fig. 22, 23. 
Helix succinea, Linn. Trans, viii. p. 218. 
Helix putris, Mont. Test. Brit. p. 376, pi. 16, fig. 4. 
