Testacella Cuv. 
Tethys I. 
Textrixv Röm. 
Thalassia Alb. 
Thalassophila 
Thalotia Gray 
Thapsia Alb. 
Thaumasia Alb. 
Thaumastus Alb. 
Thecalia Ad. 
Theeidea Defr. 
Theeodonta Ad. 
Thelidomus Sw. 
Theliostoma Mörch 
Theodoxus Montf. 
Theora Ad. 
Thersites Pfr. 
Thetis Sow. 
Thyreopsis Ad. 
'Ihysanota Alb. 
Tichogonia Rossm. 
Tifata Ad. 
Tivela Linck 
Tomichia Bens. 
Tomigerus Spix 
Tomigerella Pfr. 
Tomocyelus Crosse 
Tornatellina Beck 
Tornatellinoides Pfr. 
Torquilla Stud. 
Tortulosa Gray 
Trachia Alb. 
Trachelia Pfr. 
Trachycardium Mörch. 
Tralia Gray 
Trapezium Mühlf. 
Trevelyana Leach 
Triboniophorus Humb. 
Trichia Hartm. 
Tridachia Desh. 
Tridaena Brug. 
Tridonta Schum. 
Trigona Mühlf. 
Trigonia Brug. 
‘Trigonostoma Fitz. 
Trigonostoma Vest. 
Triloba Vest. 
Triodopsis Raf. 
Iriopa Johnst. 
'Triopella Sars 
Triquetra Klein 
Tritonia Cuv. 
Trochatella Swains. 
Trochiseus Sow. 
Trochoeochlea Klein 
Trochomorpha Alb. 
Trochonanina Mouss. 
Trochus L. 
Tropidiseus Stein 
Tropidocardium Röm. 
Tropidophora Gray 
Truncatella Rioso 
Tubiola Ad. 
Tudora Gray 
Tugalia Gray 
Turbo Lam. 
Tureia Ad 
Turquetia Velain 
Turrieula Deck 
Tyleria Ad. 
Tylodina Raf. 
Umbonella Ad. 
Umbonium Link 
Umbrella Ad. 
Uneinaria Vest. 
Ungulina Daud. 
Unio Retz. 
Uniopsis Swains. 
Uniplicaria Pfr. 
Uperotis Guett. 
Uroeyclus Gray 
Utrieulopsis Sars 
Utriculus Brown 
Uvyanilla Gray 
Waginulus Fer. 
Vallonia Risso 
Vanganella Gray 
Varicella Pfr. 
Velorita Gray 
Venericardia Lam. 
Veneridae 
Venerupis Lam. 
Ventricola Römer 
Ventridens Binn. 
Venus L. 
Veronicella Blv. 
Vertieordia S. Wood 
Vertigo Müll. 
Vertilla Moq. 
Viana Ad. 
Videna Ad. 
Villiersia d’Orb. 
Viquesnelia Desh. 
Vitrea Fitz. 
Vitrina Drp. 
Vitrinella ©. B. Ad. 
Vitrinidae 
Vitrinoconus Semp. 
Vitrinoidea Semp. 
Vitrinopsis Semp. 
Volvatella Pease 
Volvula A. Ad. 
Vulsella Humphr. 
W#aldheimia King 
Waltonia Davids. 
Weinkauffia A. Ad. 
Woodwardia Crosse 
*anthomelon Mart. 
Xanthonella Gray 
Xanthonyx Crosse 
Xerocampylaea Kob. 
Xeroleuca Kob. 
Xerophila Held 
Xesta Alb. 
Xylophaga Turt. 
Xylotrya Leach 
Woldia Möll. 
Zebra Shuttl. 
Zebrina Held 
Zeidora A. Ad. 
Zenatia Gray 
Zenobia Gray 
Zirphaea Leach 
Ziziphinus Leach 
Zonites Montf. 
Zonitidae 
Zonitoides Lehm. 
Zonyalina Mart. 
Zoogenetes Morse 
Zospeum Bgt. 
212. 
)bk2. 
