124 



INDEX TO GENERA AND SUBGENERA OF MOLLUSCA. 



Terebralia, 40, 66. 



Teredina, i. 



Teredo, i. 



Textivenus, 6. 



T/ia'tmista, see Spartina. 



Thecopsella, 35. 



Thesbia, 53. 



Thracia. 3, 61. 



Thyasira, see Axinus. 



Tiarel/a, see Cyrbasia. 



Tinostoma, 21, 64. 



Tivelina, 6. 



Tomichia, 31, iii. 



Tomostoma, 24. 



Tonicia^ see Chiton. 



Tornatella^ see Actseon. 



Tornatellasa, 53. 



Tornatina, 54, 68. 



Tortisipho, 45. 



Trachelochetus, 51. 



Trachycardium, 8. 



Trachyschoenium, 39. 



Traliopsis, 56. 



Transovula, 42. 



Trapezium, 8. 



Tricolia, 23. 



Triforis, 39, 66. 



Trigonocoeha, see Limopsis, Trinacria. 



Trinacria, 15. 



Triplex, 43, in. 



Triton, see Columbella, Lampusia. 



Tritonidea, 44. 



Triioniicm, see Lampusia. 



Trituba, 39. 



Trivia, 42. 



Trochiscus, see Norrisia. 



Trockit.i^ see Calyptrsea. 



Troc/iomorp/ia, see Helix. 



Trochus, 22, 64. 



Trochus, see Basilissa, Boutillieria, Cal- 

 liostoma, Calyptrcea, Gibbula, Xeno- 

 phora. 



Truncaria, 44. 



Truncatella, 30. 



Tr^'panaxis, 40. 



Tuba, 36. 



Tudor a, see Dissostoma. 



Tugurium, 29. 



Tiirbinella, see Latirus. 



Turbo, 23, 64. 



Turbo^ see Boutillieria, CoDonia, Gib- 

 bula, Leptothyra, Norrisia, Scala, 

 Solariella, Tuba. 



Turbonilla, 25, 64. 



Turbonilla^ see Odontostoraia, Syrnola. 



Turriteila, 35, 65. 



Turritella^i see Dialopsis, Mesalia. 



Tylochilus, 41. 



Tympanotomus, 40, 66. 



Typhis, 44, 66. 



Umbrella, 55. 

 Unio, 14. 

 Uxia, 49. 



Vaginella, see Euchilotheca. 



Vallonia, 57. 



Valvata, 30. 



Vatvata, see Bithinella. 



Valvatella, 60. 



Valvatina, 60. 



Vascotiia, see Hindsiella. 



Ve/amta, see Cepatia. 



Velates, 24. 



Velletia, 55. 



Velorita, 7, 62. 



Velutina, 114. 



Venerella, 6. 



Venerie/>zs, see \^enus. 



Venericardia, 14, 63. 



Veneritapes, 5. 



Venie//a, see Anisocardia. 



Vdnih'a, see Anisocardia. 



Venus, 5, 62, 114. 



Venus, see Anisocardia, Atopodonta. 



Vermetus, 36, 65. 



Vermicularia, 36. 



Vertagus, 38. 



Verticordia, 3. 



Vertigo, 57. 



Vertigo, see Isthmia. 



Videna, 57. 



Vitrina, 56. 



Vitularia, 44. 



Viviparus, 30, in. 



Voluta, 47. 



Voluta, see Volutilithes, Volutolyria. 



Volutilithes, 48, 66, 112. 



Volutocorbis, 48, 112. 



Volutulyria, 48. 



\^olutopsis, 45. 



Volutopupa, 48, 112. 



Volvaria, 53, 68. 



Volvariella, 54. 



Volvula, see Volvulella. 



Volvulella, 54, III. 



Vulpicella, 42. 



Vulsella, 18. 



Vulsellina, 18. 



Wateletia, 42. 

 Woodia, 14. 



Xenophora, 29, 65, no. 



Zebina, 32. 

 Zebinella, 32. 



Zizyphimis, see Calliostoma 

 Zonites, 56. 



