204 



Pisania Bivon. 25. 

 Pisidium Pfr. 172. 

 Placenta Petz. 191. 

 Placentula Lowe. 103. 

 Placuna Soland. 191. 

 Placunanomia Brod. 191. 

 Plagioptycha Pfr. 109. 

 Planaxis Lam 65. 

 Planispira Bk. 112. 

 Planorbella Hldm. 144. 

 Planorbis Guett. 144. 

 Planorbula Hldm. 145. 

 Plebecula Lowe. 108. 

 Plecotrema H. A. Ad. 141. 

 Plectopylis Bens. 99. 

 Plecostylus Bk. 120. 

 Plectotropis Alb. 104. 

 Plekochilus Gldg. 118. 

 Pleiodon Conr. 183. 

 Pleurobrancliiis Cuv. 89. 

 Pleurodonta Fschr. 110. 

 Fleurotoma Lam. 26. 

 Plicadomus Sw. 92. 

 Piicatella Sw. 37. 

 Plicatula Lam. 191. 

 Plotia Bolt. 63. 

 Pollia Gray. 26. 

 Polita Held. 95. 

 Polydonta Schmch. 79. 

 Polydontes Mft. 110. 

 Polygyra Say. 99. 

 Polyg-yratia Gray. 99. 

 Polymita Bk. 109. 

 Polytropa Sh. 33. 

 Pomatia Gray. 108. 

 Pomatias Stud. 153. 

 Pomus Humph. 69. 

 Porphyria Bolt. 35. 

 Porphyrobaphe Sh. 122. 

 Potamides Brug. 60. 

 Prisogaster Mörch. 76. 

 Prochilus Alb. 117. 

 Proserpina Gray. 156. 

 Prunum Mart. 42. 

 Psammobia Lam. 161. 

 Psammocola Blvll. 162. 



Pseudachatina Alb. 123. 

 Pseudalinda Bttg. 138. 

 Pseudamussium Klein. 189. 

 Pseudazeca Pfr. 131. 

 Pseudocampylaea Pfr. 108. 

 Pseudonenia Bttg. 137. 

 Pterocera Lam. 55. 

 Pterocyclos Bens. 147. 

 Pteronotüs Sw. 23. 

 Puncticulis Sav. 51. 

 Pupa Drap. 132. 

 Pupilla Leach. 133. 

 Pupina Vign. 150. 

 Pupinella Gray. 150. 

 Pupinopsis H. Ad, 150. 

 Purpura Brug. 32. 

 Pusia Sw. 41. 

 Pustularia Gray. 58. 

 Pygmaea Humph. 43. 

 Pyramidea Sw. 79. 

 Pyramidula Fitzgr. 98. 

 Pyrazus Mft. 60. 

 Pyrula Lara. 25. 

 Pythia Bolt. 140. 



Quadrula Efq. 180. 

 Quoyia Desh. 65. 



R. 



Rabdotus Alb. 121. 

 Rachis Alb. 127. 

 Raeta Gray. 161. 

 Eanella Lam. 29. 

 Rangia Desmoul. 161. 

 Rapa Klein. 34. 

 Rapana Schmch. 34. 

 Realia Gray. 153. 

 Registoma Hass. 150. 

 Rhinocantha H. A. Adams. 23. 

 Rhiostoma Bens. 147. 

 Rhizoconus Mörch, 52. 

 Rhodea H. A. Ad. 131. 

 Rhynchonella Fschr. 193. 

 Rhytida Alb. 92. 

 Ricinula Lam. 33. 



