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INDEX. 



Sabellaria 



Sanguinolaria 



Saxacavi 



Scalaria 



Scalarides 



Septaria 



Serpula 



Serpidacea 



Sigaretus 



Siliquaria 



Solarium 



Solecurtus 



Solen 



Solenides 



Solenimya 



Spirorbis 



Spirula . 



Spondylus 



Stomatella 



Stomatia 



Strombus 



Struthiolaria 



Succinea 



Tellina . 



Tellinides 



Terebella 



Terebellum 



Terebra 



Terebratula 



Teredo . 



Terediiia 



Testacella 



Tornatella 



Trochus 



Tridacna 



Tridacnites 



Trigonia 



Trigonacea 



Triton . 



Tubicola 



Turbicinella 



Turbo . 



Turbinacea 



Turbinella 



Turritella 



