O16 
Ptychomya, 466. 
Ptygmatis, *244, 
Pugiunculus, 350. 
Pullastra, 475. 
Pulmonifera, 288. 
Pulvinites, 418. 
Puncturella, *273. 
Pupa, 37, *292. 
Pupillia, *273. 
Pupina, *309. 
Pupineila, 309. 
Purpura, 23, 36, 56, *222. 
Purpurina, *222. 
Pusionella, *218. 
Pycnodonta, 407. 
Pygope, 363. 
Pyramidella, *238. 
Pyramidellide, *238. 
» Pyramts, 239. 
Pyramis, *265. 
Pyramus, 469. 
Pyrazus, *243, 
Fyreila, 217. 
Pyrgula, 246. - 
Pyrula, 24, 32, 37, *217. 
Pythina, *459. 
Quenstedtia, *481. 
Quin, 411. A 
Quoyia, 223. 
Race, 46. 
Rachis, 21. 
Radiati, *189. 
Radiolites, *446. 
Radius, 234. 
Radsia, 283. 
Ranella, 56, *214. 
Range of marine species, 
56 
Rangia, 478. 
Rapana, *217. 
Raphistoma, *270. 
Realia, *807. 
Recluzia, *285. 
Redonia, *469. 
Red Sea shells, 73. 
Fenieiia, 416. 
Representative species, 54, 
poem 
Reproduction of lost parts, 
40. 
Requienia, 346, *439. 
Respiration, 396. 
Respiratory system, 25. 
tetractors, 20, 402. 
Retzia, *374. 
Reversed shells, 37. 
Rhabdoceras, *196. 
Rhegostcma, *309. 
Rhinoclavus, *242. 
Rhinodomus, 221. 
Rhizochius, 222. 
Rhizorus, 317. 
Rhodope, *340. 
Ehoaostoma, 304, 
Hhomboides, 502. 
Ehyncholites, 182. 
Ehynchomyz, 495. 
INDEX. 
Rhynchonella, 55, 388, 
*310. 
Rhynchonellide, *375. 
Rhynchora, 365. 
Rhynchoteuthis, 182. 
Ribeiria, *497. 
Ricinula, *223. 
Rimella, 211. 
Rimula, *274. 
Rimularia, 275. 
Ringicula, *222. 
Ringine'la, 314, 
Risella, *253. 
Rissoa, *255. 
Rissoélla, 256. 
Rissoina, *256. 
Fiivicola, 301. 
Rossia, *170. 
Rostellaria, 35, 55, *212. 
Rotella, *265. 
Rothomagenses, *198. 
Roxania, 316. 
‘Rudistes, 440. 
Runcina, *323. 
Fiupellaria, 476. 
Rupicola, 495. 
Sagda, *289. 
Sagitta, 342. 
St. Helena shells, 95. 
Saliva, 36. 
Salivary glands, 23. 
Salpa, 19, 23. - 
Sanguinolaria, 55, *482. 
Sanguinolaria, 481. 
Sanguinolites, 468, 498. 
Sardinian snails, 92. 
Saxicava, 56, *501. 
Saxidomus, *473. 
Scacchia, *458. 
Scea, 352. 
Sceeurgus, *165. 
Scalaria, *250. 
Scaldia, *498. 
Scalites, *270. 
Scapha, 230. 
Scaphander, *318. 
Scaphaniaia, 182. 
Scapharca, 424, 
Scaphella, *230. 
Scaphites, *200. 
Scaphula, *227. 
Scaphula, 424. 
Scarabus, 304. 
Schizo-chiton, 284. 
Schizodesma, 477. 
Schizodus, 431. 
Schizostoma, 267. 
Schizotreta, 388. 
Sciadephorus, 165. 
Scintilla, *460. 
Scissurella, *269. 
Sconsia, 225. 
Scrobicularia, *484, 
Scur7ria,.281. 
Scutus, 275. 
Scyllea, 8, *333. 
Sedgwickia, *497. 
Segmentina, 303, 
Semele, *483, 
Semicorbis, 452 
Sepia, *177. 
Sepiade, *176. 
Sepiola, *169. 
Sepioteuthis, *168 
Septa, 184. 
Septaria, 506, 
Septtifer, 421. 
Seraphs, *212. 
Serpularia, 266. 
Serripes, *454. 
Shell, 28, 204. 
Sigaretus, *236. 
Siliqua, 488. 
Siliquaria, *249, 
Siliquaria, 488. 
Simpulopsis, 290. 
Sinemuria, 470. 
Sinistral shells, 204, 
Sinu-pallialia, *472. 
Sinus, 20. 
Sinusigera, 212, 352. 
Siphon, 26, 155. 
Siphonal impression, 399, 
404. 
Siphonaria, *281, 305. 
Siphonaria, 387. 
Siphonida, *436. 
Siphonopyge, *321. 
Siphonostoma, 293. 
Siphonostomata, *269. 
Siphonotreta, *390. 
Siphonotus, 320. 
Siphopatellu, 276. 
Siphuncle, 39, 174, 180,184. 
Skenea, *256. 
Smaragdinella, 316. 
Smell, 18. 
Solarium, *253. 
Solecardia, 460. 
Solecurtoides, 488. 
Solecurtus, *488. 
Solemya, *429. 
Solen, *486. 
Solenella, *429. 
Solenide, *486. 
Solenomya, 429. 
Soletellina, 482. 
Sormetus, *320. 
South African province,7Q, 
Sowerbya, *478. 
Spadix, 185. 
Spanish shells, 64. 
Spatha, 435. 
Spawn, 40. 
Species, 46. 
Specific areas, 51. 
Specific centres, 51. 
Spheera, *457. 
Spherella, 458. 
Spherium, 461. 
Spherulites, 446. 
Sphenia, *490. 
Spinigera, *212. 
Spirigerina, 378. 
Spiral operculum, 267. 
Spiratella, 351. 
Spirazis, 293, 
