INDEX OF GENERA. 



829 



Tabulata, 78 

 Taeniopora, 161 

 Tancredia, 554 

 Tapes, 566 

 Teinostomata, 704 

 Teleodesmacea, 533 

 Tellina, 566 

 Tellinopsis, 385 

 Telotremata, 281 

 Tenea, 558 

 Terebridse, 798 

 Terebratella, 306 

 Terebratula, 303 

 Terebratulina, 304 

 Terebra, 798 

 Teredo, 577 

 Tessarolax, 754 

 Tetradium, 99 

 Tetragraptus, 29 

 Tetracoralla, 54 

 Tetranota, 612 

 Textularia, 9 

 Thamniscus, 150 

 Thecia, 91 

 Tornatellaea, 806 

 Tornatinidae, 810 

 Trachydomia, 674 

 Trachypora, 95 

 Trematis, 201 

 Trematonotus, 615 

 Trematopora, 139 

 Trematospira, 345 

 Trepospira, 648 

 Trepostomata, 127 

 Triblidium, 603 



Trigonarca, 407 

 Trigonia, 483 

 Trigonostoma, 798 

 Trimerella, 191 

 Trochidae, 702 

 Trochonema, 669 

 Trochoturbinidae, 667 

 Trophon, 786 

 Tropidoleptus, 305 

 Truncatulina, 1 1 

 Tudicla, 764 

 Tulotoma, 725 

 Turbinella, 781 

 Turbinellidae, 781 

 Turbinolia, 102 

 Turbo, 676 

 Turbonilla, 709 

 Turbonopsis, 675 

 Turnus, 577 

 Turritella, 729 

 Turritellidae, 729 

 Tympanotonus, 749 

 Typhis, 786 



Uncinulus, 290 

 Unio, 479 

 Unitrypa, 145 

 Urosalpinx, 784 



Valvata, 724 

 Valvatidae, 724 

 Vanikoropsis, 715 

 Vanuxemia, 412 

 Vasum, 782 

 Velatella, 707 



Venericardia, 544 

 Veniella, 538 

 Venus, 563 

 Vermetus, 737 

 Verneuilina, 10 

 Vicarya, 738 

 Vinella, 118 

 Vitulina, 351 

 Viviparidae, 725 

 Viviparus, 725 

 Vola, 497 

 Voluta, 794 

 Volutidae, 790 

 Volutilithes, 790 

 Volutomorpha, 792 

 Volvula, 810 

 Vorticifex, 817 



Westonia, 193 

 Whiteavesia, 517 

 Whitella, 414 

 Whitfieldella, 346 

 Wilsonia, 293 

 Worthenia, 639 

 Worthenopora, 164. 



Xenophora, 723 

 Xenophoridae, 723 



Yold 



1a, 402 



Zaphrentis, 56 

 Zonitidae, 822 

 Zygospira, 307 



