INDEX. 



517 



Spirialis, 347, *351. 

 Spiiifera, *371. 

 Spiriferidge, *371. 

 Spiiiferina, *372. 

 Sjnrigera, 373. 

 Spirogl3'plius, 2-19. 

 Spirula, 9, *178. 

 Spirulidffi, *178. 

 Spirulirostra, *177. 

 lS2nsv.la, 477. 

 Spon^.T/lobolus, 387. 

 Spondj/Iolites, 183. 

 Sponclylus, 7, 30, 35. 38, 55, 



*413. 

 Spongana, ISO. 

 SpongiobranclaEea, *35J:. 

 Sporadic species, 51. 

 Sportella, 457. 

 Stalagmium, 427. 

 Stegcmostoma, 308. 

 Stenoceras, 197. 

 Stenogji-a, *293. 

 Stenopus,'*2S9. 

 Stililer, 9, *241. 

 Stoastoma, *310. 

 StomateUa, *267. 

 Stomatia, *268. 

 Stomatia, 236. 

 Btrajoarollus, 267. 

 ^treiihona, 227. 

 Strepsidura, 218. 

 Streptaxis, *289. 

 Strejotorhynchus, 380. 

 Striati, *r89. 

 Strigilla, 480. 

 Strobilus, 294. 

 Strombidce, *210. 

 Strombus, 31, *210. 

 Strophalosia, *385. 

 Btropheodonta, 381. 

 Stropliomena, *380. 

 Stropihostoma, 308. 

 Structure of shell, Braclii- 



opoda, 360. 

 Strutliiolaria, *246, 

 Stylina, 241. 

 Styliola, 349. 

 Stj-locheilus, ^321. 

 Stylopsis, *239. 

 Styloptygma, *241. 

 Sicb-clymenia, 190. 

 Sub-generic area, 52. 

 Sub-spiral operc.,208. 

 Subula, 220. 

 Subidina, 292. 

 Succinea, *290. 

 Suessia, *372. 

 Sidco-buccinum, 219. 

 Sunetta, 474. 

 Susaria, *323. 

 Suture, 180, 206. 

 Sycotypus, 217. 

 Syncera, *256. 

 Sjmdosmj'a, *483. 

 Synonyms, 48. 

 kSyrnola,238. 



Tagehis, 488. 

 Tunalia, 2i7. 



Tancredia, *457. 

 Tanysiphon, *477. 

 Tanystoma, *290. 

 Taonius, 170. 

 Tapes, *475. 

 Taste, IS. 



Teb 671)10 phor us, 298. 

 Tectaria, *252. 

 Tecti-branchiata, *312. 

 Tcctura, 281. 

 Tegida, 264. 

 Teinotis, *269. 

 Teilina, 458. 

 Teilina, *480. 

 Tellinidce, *J79. 

 Tellinides, *480. 

 Tellinodora, 480. 

 Tellinomya, *497. 

 Temnoclieilus, 189. 

 Temperatiu'e, 39. 

 Tentaculites, *190. 

 Tentaculites, 350. 

 TerebeUum, *212. 

 Terebellum, 248. 

 Terebra, 55, *220. 

 Terebralia, *243. 

 Terebratella, -365. 

 Terebratula, 19, 38, 357, 



358, *363. 

 Terebratulidce, *363. 

 Terebratulina, *364. 

 Terebrirostra, 385. 

 Teredina, *507. 

 Teredo, 35, 341, *506. 

 Tergipes, *335. 

 Tertiary shells, 130. 

 Testacella, 9, *298, 

 Tethj-s, *333. 

 Tetrabrancliiata, *178. 

 Tetraplodon, 434. 

 Teudopsis, *i68. 

 Teuthidce, *167. 

 Teuthis, 167. 

 Texture of shells, 29. 

 Thalassides, 470. 

 Tliallicera, 259. 

 Theea, 190, 346, *349. 

 Thecacera, *330. 

 Tlieceiirybia, 350. 

 Thecidiiun, 358,* 369. 

 Thecosomata, *348. 

 Thetis, *491. 

 Thiara, 246. 

 TJioracoceras, *'191. 

 Thoracoceras, *195. 

 Tlu-acia, *495. 

 Thyatira, 456. 

 Thysanoteuthis, *172. 

 Tiara, 231. 

 Tichogonia, *423. 

 Tiedemannia, *351. 

 TomeUa, *229. 

 Tomigerus, 289. 

 Tongue, 287. 

 Tonicia, 283. 

 Torcula, 248. 

 Torinia, *253. 

 Tomatella, *313. 

 TornatellidEc, *312. 



Tomatellina, *294. 

 Tornatina, *315. 

 Torquilla, 292. 

 Toxoceras, *200. 

 Trans- Atlantic prov., 85. 

 Trapezium, 467. 

 Trawhng, 139. 

 Tredopsis, *2S9, 

 Trematis, *3S9. 

 Tremoctopus, 159, *164. 

 Trevelyana, *331. 

 Triboniophorus, *297. 

 Trichites, 31, *420. 

 Trichocyclus, *354. 

 Trichotropis, 33, 55, *216. 

 Trlcolea, 263. 

 Tridacna, 13, 35, 55, *452. 

 Tridacnidee, *451. 

 Tridonta, 464. 

 Triforis, 37, *242. 

 Trigona, *474. 

 Trigonella, 375, 477, 484. 

 Trigonellites, 182. 

 Trigonia, *430. 

 Trigoniada?, *430. 

 Trigonoceras, 194. 

 Trigonocaelia, 426. 

 Trigonosemus, *365. 

 Trigonotreta, 371. 

 Trigonulina, 472. 

 Triomphalia, 506. 

 Triopa, *330. 

 Tritoceras, *192. 

 Triton, 33, 36, 55, 56, *214. 

 Tritonia, *332. 

 Tritoniadse, *332. 

 Trivia, *233. 

 Trochalia, *244. 

 Trochatella, 276. 

 Trochatella, *310. 

 Trochiscus, 264. 

 Trochita, *276. 

 Trochoceras, ^169. 

 Trocholites, 189. 

 Trochotoma, *271. 

 Trochus, 23, 38, *264. 

 Tropceum, 199. 

 Trophon, 55, *218. 

 Tropidophora, 307. 

 TruncateUa, 36, *256. 

 Tw&ff, 256. 



Tubular structure, S2. 

 Tudora, 307. 

 Tugonia, 489. 

 Tunicata, 5. 

 Turbinella, *216. 

 Turbinellus. 31. 

 Turbinidas, *263. 

 Turbo, 23, *263. 

 Turbonilla, 239. 

 Turcica, 265. 

 Turrilites, *200. 

 Turris, 228, 231. 

 Turritella, 36, *248. 

 TurritellidEe, *248, 

 Turtonia, *459. 

 Tj'leria, *496. 

 Tylodina, *324. 

 Tylostoma, *314. 



