INDEX, 
331 
octanfracta, 211, 
oetodentata, 172. 
octona, 159, 163, 211. 
Odostomia, 162, 166, 176, 183, 184, 
186, 190. 
ofFtonensis, 168. 
Oleacina, 53. 
Olivieri, 130. 
Omphiscola, 211. 
Onchidiadee, 50. 
Onchidiura, 51. 
opacus, 203. 
Operculum of Gasteropoda, 10. 
Ophicardelli, 190. 
Orchideous snails, 97. 
ornata, 123. 
Orthoconchas, 248. 
Ostracea, 249. 
Otina, 198, 222, 223, 224. 
Otini^, 223. 
Otis, 223, 224. 
ovale, 257. 
ovalis, 272, 279, 280. 
ovata, 197, 203, 280. 
ovatus, 203. 
Ovatella, 192, 193, 195. 
ovulum, 224. 
Oxychilus, 92, 94, 96, 127. 
pallida, 129, 254, 256. 
pallidum, 254, 267. 
Paludina, 23, 24, 26, 27, 28, 29, 30, 
31, 32. 
Paludinas, 29. 
paludosa, 119, 272. 
paludosus, 1 1 9, 272. 
palustre, 208. 
palustris, 172, 193, 197, 200, 208, 
209, 268. 
Parma, 78. 
Parreysi, 133. 
parvula, 176, 186, 188. 
parvus, 236. 
Patella, 6, 43, 217, 219, 221. 
Patula, 142, 143, 144. 
patulus, 202. 
Pectinacea, 249. 
Pectinibranchiata, 9, 14. 
Pedifera, 2. 
Pedipes, 196. 
pellucida, 58, 65, 72, 73, 87. 
pellucidus, 87. 
peloponnensis, 47. 
Pera, 264, 265, 266, 267, 268. 
pereger, 148, 200, 202, 204, 205,219. 
peregra, 197, 202, 203. 
peregrina, 211. 
peregrum, 202. 
perla, 225. 
Periostracum of shells, 76. 
Peronia, 50, note. 
personata, 192, 193. 
personatum, 193. 
perspectiva, 142. 
perversa, 64, 176, 182, 184, 186. 
perversus, 176, 185, 186. 
Petavia, 99. 
petholata, 121. 
Petrophila, 50. 
Pfeif?eri, 147. 
phalloides, 81. 
Phasianella, 45, 
Philippi, 279. 
Philodromus, 79. 
Pholadacea, 248. 
Phyllivora, 49, 56. 
Physa, 3, 182, 197, 198, 199, 207, 
214, 217, 224, 225, 226, 227, 228, 
229. 
Physina, 224. 
Phytia, 193. 
picea, 115. 
pictorum, 279, 280. 
Pine snails, 97. 
pisana, 64, 120, 121, 125, 126, 127. 
piscinalis, 34, 35, 37, 272, 273. 
Pisidiadae, 248, 250, 263. 
pisidiodes, 255. 
Pisidium, 255, 264, 265, 266, 267, 
268, 269, 270. 
planatus, 238, 239. 
Planorbina, 230. 
Planorbis, 6, 7, 36, 58, 61, 63, 65, 
66, 102, 117, 197, 198, 225, 228, 
229, 230, 231, 232,233, 234, 235, 
236, 237, 240, 241, 242, 243, 244, 
245, 246. 
planorbis, 36, 37, 238, 242. 
platana, 240. 
platyphylla, 140. 
Platypoda, 16. 
Pleurobranchi, 217. 
Pleurobrancbiata, 9. 
plicata, 174, 184 
