INDEX. 



415 



Thecalia,H. & A. Ad 



Ill 



PAGE 



232 



Theceurybia, Bronn. 



II 



98 



Thecidea, Defrance. 



III 



314 



Thecidiidge. . . . 



III 



814 



Thecidium, Sowb. . 



III 



314 



Thecodonta, A. Ad. 



III 



221 



Thecosomata, Gray. 



II 



89 



Thecospira, Zug. . 



III 



327 



Theliconus, Swains. 



II 



188 



Theliderma, Swains. 



III 



239 



Thelidomus, Swains. 



III 



35 



Theliostyla, Mch. . 



JI 



294 



Themisto, Oken. 



II 



376 



Theobaldius, Nevill. 



II 



286 



Theodoxus, Montfort 



. II 



296 



Theora, H. & A. Ad. 



III 



163 



Tliermhj^drobia, Pan 



L II 



266 



Thersites, Mch. 



III 



46 



Thersites, Pfeiffer. 



III 



44 



Thesbia, Jeffrej^s. . 



II 



186 



Tlietironia, Stolicz. 



III 



181 



Thetis,- Adams. . . 



III 



179 



Thetis, Sowerby. . 



III 



181 



Thiarella, Swainson. 



II 



168 



Thiatyra, Sowb. 



III 



211 



Thisoa, Montfort. . 



II 



53 



Thordisa, Bergh. . 



II 



374 



Thracia, Leach. . . 



III 



144 



Thuridella, Bergh. . 



II 



390 



Thvca,H. &A.Ad. 



II 



214 



Thyella, H. & A. Ad. 



III 



165 



Thylacodes, Gruettard 



I. II 



227 



Thj^reopsis, H. Ad. 



III 



222 



Thyreus, Philippi. . 



II 



199 



Thyrophorella, Greef 



. II 



290 



Th^^saira, Leach. . 



III 



211 



Thysanoceras, Hj'^att 



II 



76 



Thysanota, Albers. 



III 



31 



Thysanoteuthidse. . 



II 



13 



a, 



II 



31 



Thysanoteuthis, Tr. 



II 



31 



Thysaphora, Strebel. 



III 



29 



Tiara, Bolten. . . 



II 



253 



u a 



II 



257 



Tiara, Swn. ... 



II 



71 



Tiarella, Swn. . . 



II 



168 



Tiaropsis, Brot. . . 

 Tiberia, Jeffreys. . 

 Tichogonia, Rossm. 

 Tiedemannia, Chiaje. 

 Tifata, H. & A. Ad. 

 Tigris, Trosch. . . 

 Timoclea, Leach. . 

 Tindaria, Bell. . . 

 Tiphobia. E. A. Smith. II 

 Tirolica, Bottg. . . 

 Tirolites, Mojs. , . 

 Tisoa, M. de Serres. 

 Tithyonia, Cavolini. 

 Tivela, Link. . . 

 Todarodes, Steenst. 

 Tomastoma, Desh. . 

 Tomella, Swn. . . 

 Tomichia, Benson. 

 Tomigerella, Pfr. . 

 Tomigerus, Spix. . 

 Tomocyclus. C. & F. 

 Tomogerus, Montf. 

 Tonicella, Carp. 

 Tonicia, Gray. . . 



Torcula, Gray. . . 

 Torinia, Gray. . 

 Tornatella, Lam. . 

 Tornatellsea, Conr. 

 Tornatellidse. . • 

 Tornatellina, Beck. 

 Tornatellinte. 

 Tornatelloides, Pfr. 

 Tornatina, A. Ad. . 

 Torquatella, Held. . 

 Torquilla, Studer. . 

 Tortifusus, Conr. . 

 Tortoliva, Conr. 

 Tortula, Vest. . . 

 Tortulosa, Gra3^ . 

 Totteria, Perkins. . 

 Toncasia, M.-C. . . 

 Tournoueria, Brus. 

 Toxoceras, d'Orb. . 

 Toxoglossa. . . . 

 Toxosoma, Conr. . 



II 



PAGE 



253 



II 



239 



III 



265 



II 



93 



III 



96 



II 



198 



III 



176 



III 



250 



. II 



254 



III 



75 



II 



68 



II 



53 



II 



349 



III 



177 



II 



34 



II 



298 



II 



184 



II 



278 



III 



70 



III 



155 



II 



282 



III 



55 



II 



340 



II 



340 



II 



343 



II 



224 



II 



217 



II 



356 



II 



356 



II 



354 



III 



65 



11 



355 



III 



62 



II 



355 



III 



71 



III 



69 



II 



142 



II 



175 



III 



77 



II 



281 



III 



180 



III 



200 



II 



266 



II 



85 



III 



345 



II 



270 



