Strophostomella, F. IIT 
Strophostylus, Hall. II 
Strumosa, Bottger. III 
Struthiolaria, Lam. II 
Sturia, Mojs. Til 
Stylifer, Broderip.. II 
Styliferina, A. Ad. ri 
Stylina, Gray. II 
Styliola, Lesueur. . II 
Stylocheilus, Gould. IJ 
Stylodonta, Cristof. III 
Styloides, Fitz. Ill 
Stylommatophora. III 
Styloptygma, A. Ad. II 
Subclymenia, d’Orb. II 
Subemarginula, Blainy.II 
Subeulima, Souverb. II 
Substricta, Bottger. III 
Subula, Schumacher. IT 
Subulina, Ads. . III 
Subulina, Beck. . hie 
Subulina, Troschel. — IT 
Subulites, Conr. LE 
Succinea,Draparnaud.III 
Succineide. . Ill 
Suessia, EH. Deslonge. III 
Sulcobuceinum, d’Orb. IT 
Sulcochiton. . i 
' Sulcocyprea, Conr. II 
Suleospira, Trosch. II 
Suleulus, H. & A. Ad. II 
Sultana, Shuttl. Iil 
punetta, Link, . . III 
Surcula, H. & A. Ad. II 
Surculites, Conr. Ht 
pusania, Gray... .. TT 
Swainsonia, H.& A.Ad. IT 
Sychar, Hinds. . II 
Sycoceras, Pictet.. II 
Sycopsis, Conrad. . II 
Sycotypus, Ads. II 
Sycotypus (Browne)G. IT 
Sycum,Bayle. . . Il 
Symmetrogephyrus, M.II 
Symnia, Risso. . I 
Symphynota, Swains. ITI 
INDEX. 
PAGE 
56 | Syncera, Gray. . II 
Syncyclonema, Meek. III 
Syndonites, Pirona. III 
Syndosmya, Recluz. IIT 
Syntoxia, Rafinesque.IIT 
Syntrielasma, M.& W. IIT 
Syringothyris,Win. III 
Syrinx, Bolt. II 
Syimola, AL Ads: 92- EI 
Syrnolopsis, HE. A. 8. II 
Systrophia, Pfr. Iil 
Tachea, Leach. . Til 
Tacheocampylea, Pfr.I1T 
Teeniodon, Dunker. III 
Teenioglossa. Il 
Tagelus, Gray. . i BS 
Taheitea, H. & A. Ad. II 
Talona, Gray. III 
Talonella, Gray. 1H 
Talopia, Gray. II 
Talparia, Troschel. II 
Tamiosoma, Conrad. III 
Tanalia, Gray. i 
Taneredia, Morris. III 
Tanganyicia, Crosse. II 
Tania, Gray. . II 
Tanychlamys,Benson. III 
Tanysiphon, Benson. III 
Tanystoma, Benson. III 
Taonius, Steenst. ch 
Tapada, Gray. suis! 
Tapada, Studer. IIL 
Tapes, Megerle. BGI 
Tapesine. Yep Os 
Taphius, H. & A. Ad. III 
Taphon, H.& A. Ad. II 
Taranis, Jeffreys. II 
Tarebia, H. & A. Ad. II 
Yaria, Gray. . III 
Tatea, Woods. . II 
Taurasia, Bellardi. Tek 
Tauroceras, Schafh. III 
| Teba, Strobel. Ill 
Tebennophoride. Th 
Tebennophorus, Binn. IIT 
