Fig. 44, 45. PLANORBIS vortex. 
Planorbis vortex, Lam. Syst. vi. partie 2, p. 154. 
Helix vortex, Mont. Test. Brit. p. 454, pi. 25, lig. 3. 
Fig. 46, 47. PLANORBIS imbricatus. 
Planorbis imbricatus. Lam. Syst. vi. partie 2, p. 155. 
Helix nautileus, Mo7it. Test. Brit. p. 464, pi. 25, fig. 5. 
Turbo nautileus. Mat. and Rack, in Linn Trans, p. 169, pi. 4, fig. 4 — Brorvn in Ency. Brit. vi. p. 457- 
Fig. 48, 49. PLANORBIS fontanus. 
Planorbis fontanus. Brown's MSS. 
Helix fontana, Mont. Test. Brit. p. 462, pi. 6, fig. 6 — Mat. and Rack, in Linn. Trans, viii. p. 192. 
Fig. 50, 51. PLANORBIS lacustris. 
Planorbis lacustris. Brown's MSS. 
Nautilus lacustris, Mont. Test. Brit. p. 191, pi. 6, fig. 3 — Mat. and Rack, in Linn. Trans, viii. p. 114. 
Fig. .52, 53. PLANORBIS albus. 
Planorbis albus. Brown's MSS. 
Helix alba, Mont. Test Brit. p. 459, pi. 25, fig. 7. — Mat. and Rack, in Linn. Trans, viii. p. 192. 
Fig. 54, 55. PHYSA fontinalis. 
Physa fontinalis, Lam. Sijst. vi, partie 2, p. 156. 
Bulla fontinalis, Mont. Test. Brit. p. 226 Mat. and Rack, in Linn. Trans, viii. p. 126, pi. 4, fig. 1. 
f 
Fig. 83, 84. PHYSA fluviatilis. 
Physa fluviatilis. Brown's MSS. 
Helix Bullaeoides, Bon. Brit. Sk. pi. 168, fig. 2. 
Bulla fluviatilis, Turton's Conch. Diet. p. 27- — This shell was found by me in a stream at Clonoony, King's County, 
Ireland, and is quite distinct from P. fontinalis. In Lady Jardine's cabinet. 
Fig. 56, 57. PHYSA ALBA. 
Physa alba, Turton in Zool. Joiirn. ii. p. 363, pi. 13, fig. 3. — Found in the river Towin, in North Wales 
Fig. 58, 59. PHYSA rivalis. 
Physa rivalis. 
Bulla rivalis. Mat. and Rack, in Linn. Trans, viii. p. 126, pi. 4, fig. 2. — Mont. Test. Brit. Sup. p. 97. 
Fig. 60, 61. PHYSA hypnorum. 
Physa hypnorum. Lam. Si/st. vi. partie 2, p. 157- • 
Bulla hypnorum, Mont. Test. Brit. p. 228 — Mat. and Rack, in Linn. Trans, viii. p. 127- 
Fig 62, Q3. VALVATA piscinalis. 
Valvata piscinalis. Lam. Syst. vi. partie 2, p. 172. 
Turbo fontinalis, Mont. Test. Brit. p. 348, pi. 22, fig. 4. — Mat. and Rack, in Linn. Trans, viii. p. 168. 
Fig. 64, Q5. VALVATA piscinalis. 
Valvata, piscinalis.— Variety found at Clonoony, King's County, Ireland. 
