[Pterygia 



12 Scaphander.] 



Ptcrygia Link. L90. 



Reymondia Giraud. 450. 



Ptychatractus Stimps. 165. 



Rheda Ilumph. 9. 



Ptychomphalus Agas. 540. 



Rhiuocantha H. A. Ad. 16. 



Pugil. Fuhr. 309. 



Rhinoclavus Sw. 342. 



Puncticulis Sw. 290. 



Rhinodomus Sw. 117. 



Puncturella Lowe. 587. 



Rhizochilus Steenstrp. 148. 



Pupa Holt. 620. 



Rhizoconus Mörch. 290. 



Puperita Gray. 517. 



Rhizorus Mft. 326. 



Pupillae Phl. 587. 



Rhombus Mft. 290. 



Pupillia Gray. 587. 



Ricinula Lm. 142. 



Purpura Brug. 135. 



Rimella Agas. 313. 



Purpura Ilumph. IG. 



Rimula Defr. 588. 



Purpuridea 134. 



Rimula Loven. 587. 



Pusio Gray. 43. 



Rimularia Defr. 588. 



Pusio Sw. 172. 



Rimulus Orb. 588. 



Pusionella Gray. 77. 



Ringicula Dsh. 257. 



Pusiostoma Sw. 201. 



Risella Gray. 412. 



Pustularia Gray. 322. 



Rissoa Fremvill. 455. 



Putilla H. A. Ad. 273. 



Rissoaria Agas. 455. 



Pygmaea Ilumph. 201. 



Rissoella Gray. 419. 



Pyramea Link. 310. 



Rissoellidae 419. 



Pyramidea Sw. 549. 



Rissoidae 429. 



Pyramidella Lm. 255. 



Rissoina Orb. 450. 



Pyramidellidae 255. 



Rissoinae 455. 



Pyramidelloides Nevil. 450. 



Rissoininae 450. 



Pyramidellus Mft. 255. 



Rissopsis Garr. 470. 



Pyramis Couth. 271. 



Rollus Mft. 290. 



Pyramis Schmch. 549. 



Rossia Gray. 6. 



Pyrazus Mft. 352. 



Rostellaria Lm. 313. 



Pyrene Bolt. 201. 



Rostellum Mft. 313. 



Pyrgiscus Phl. 258. 



Rostrifera 309. 



Pyrgopsis Rochbr. 2. 



Rotella Lm. 546. 



Pyrgula Jan. 429. 



Rotellinae 546. 



Pyrgulina A. Ad. 267. 



Rowellia Orptr. 599. 



Pyrula Lm. 35 



Roxana Leach. 631. 



Pyrula Lm. 222. 



Rudolpha Schmch. 145. 



Pyrula Perry. 160. 



Rudolphus Ch. 145. 



Quadrasia Cross. 419. 

 Quoyia Dsh. 416. 



R. 



Radius Mft. 326. 

 Radsia Gray. 607. 

 Radula Gray. 512. 

 Ralia Gray. 579. 

 Rana Ilumph. 103. 

 Ranella Lm. 103. 

 Ranina Blvll. 103. 

 Ranularia Schmch. 97. 

 Rapa Klein. 150. 

 Rapana Schmch. 147. 

 Rapella Sw. 150. 

 Rapulum Rv. 77. 

 Etapum Hurnph. 166. 

 Recluzia Pet. 14. 

 Retusa Brown. 623. 

 Reymondia Brgt. 363. 



Ruma Ch. 225. 

 Rumella Brgt. 236. 



Sabia Gray. 509. 

 Sabinae Leach. 462. 

 Saccus Klein. 534. 

 Sandaliformis Mke. 517. 

 Sandalium Schmch. 506. 

 Sao H. A. Ad. 631. 

 Sarmatus Gray. 535. 

 Saulia Gray. 482. 

 Savatieria Rochebr. 43. 

 Scabricula Sw. 172. 

 Scala Klein. 239. 

 Scalaria Lm. 239. 

 Scalariidae 239. 

 Scalarus Mft. 239. 

 Scalatarius Dum. 239. 

 Scalator Gistl. 547. 

 Scalenostoma Dsh. 277. 

 Scaliola A. Ad. 246. 

 Scapha Gray. 166. 

 Scaphander Mft. 630. 



