128 I MOLLUSCHI DEI TERRENI TERZIARII DEL PIEMONTE ECC. 
Tectura taurinensis, p. 20. 
Id. tauroconica, p. 20. 
Id* var. unicolor, p. 19. 
Id. virginea, p. 19. 
TECTURIDAE, p. 19. 
Testacella, p. 56. 
Testacella Pecchiolii, p. 56. 
Id. pedemontana, p. 56. 
TESTACELLIDAE, p. 56. 
THALASSOPHILA, p. 87. 
Tomochiton, p. 90. 
Tornatella achatinea, p. 36. 
Id. aghatina, p. 36. 
Id. attenuata, p. 34. 
Id. biplicata, p. 37. 
Id. Brocchii, p. 33. 
Id. fasciata, p. 31, 33. 
Id. globosa, p. 32. 
Id. inflata, p. 32, 33. 
IA. pinguis, p. 32. 
Id. punctulata, p. 32. 
Id. semistriata, p. 33. 
Id. sulcata, p. 35. 
Id. tornatilis, p. 31. 
Id. truncata, p. 37. 
Id. truncatula, p. 31, 32. 
Id. Woodii, p. 35. 
Tornatellaea, p. 37. 
Tornatellaea bella, p. 37. 
Id. var. biplicata, p. 37. 
Id. simulata, p. 37. 
Tornatina, p. 38. 
Tornatina var. Agassizi, p. 38. 
Id. var. compressior, p. 38. 
Id. hemipleura, p. 38. 
Id. lajonkaireana, p. 38. 
Id. mamillata, p. 38. 
Id. Okeni, p. 38. 
Id. tornata, p. 39. 
Id. voluta, p. 38. 
TORNATINIDAE, p. 38. 
'Trichia, p. 65. 
Trichia hispida, p. 65. 
Trigonostoma planorbiforme, p. 66. 
Trochocerithium, p. 26. 
Trochocerithium var. imbricatior, p. 26. 
Id. var. laeviuscula, p. 26. 
Id. var. latecrenata, p. 26. 
Id. Montii, p. 26. 
Id. var. supracincta, p. 26. 
Id. turritum, p. 26. 
Trochus funiculatus, p. 4. 
Id. gigas, p. 4 
Id. Montii, p. 26. 
Id. turritus, p. 26. 
Tropidiscus, p. 84. 
Tropidiscus anceps, p. 84. 
Id. lignitarum, p. 84. 
Truncatella, p. 30. 
Truncatella var. laevigata, p. 30. 
Id. subcylindrica, p. 30. 
Id. truncata, p. 30. 
Id. truncatula, p. 30. 
TRUNCATELLIDAE, p. 30. 
Tryptichia, p. 74. 
Tryptichia antiqua, p. 74. 
Id. emyphila, p. 74. 
Id. grandis, p. 74. 
Tryptichia mastodontophila, 74. 
Id. Terveri, p. 74, 
Tugurium Borsoni, p. 4. 
Turbo truncatus, p. 30. 
Umbrella, p. 55. 
Umbrella chinensis, p. 55. 
Id. diluviana, p. 55. 
Id. elongata, p. 55. 
Id. laudunensis, p. 55. 
Id. mediterranea, p. 55. 
Le var. plicata, p. 55. 
Sassoi, p. 55. 
UMBRELLIDAE, p. 55. 
Utriculus oliviformis, p. 39. 
Id. radians, p. 39. 
Id. spatha, p. 39. 
Id. truncatus, p. 39. 
Vertizo, p. 70. 
Vertigo antivertigo, p. 70. 
Id. Capellinii, p. 71. 
Id. fossanensis, p. 70. 
Id. globosa, p. 71., 
ld. var. ligustica, p. 71. 
Id. muscorum, p. 72. 
Id. var. quatuordentata, p. 70. 
Id. var. tassaroliana, p. 71. 
Id. villafranchiana, p. 72. 
Vitrea, p. 59. 
Vitrea diaphana, p. 59. 
Id. Faustinae, p. 59. 
Id. narbonensis, p. 59. 
Id. var. tassaroliana, p. 59. 
Vitrina, p. 59. 
Vitrina brevis, p. 59. 
VITRINIDAE, p. 59. 
Voluta myotis, p. 77. 
Id. spirata, p. 38. 
Id. tornatilis, p. 31, 33. 
Volvaria spirata, p. 38. 
Volvula, p. 42. 
Volvula acuminata, p. 42. 
Id. apicina, p. 42. 
Id. Bruguierei, p. 42. 
Id. lanceolata, p. 42. 
Id. oxyacrum, p. 42. 
Id. radius, p. 42. 
Id. redacta, p. 42. 
Id. striata, p. 42. 
Volvulella, p. 42. 
Volvulus, p. 42. 
Zeidora, p. 18. 
Zeidora ligustica, p. 18. 
Id. naufraga, p. 18. 
Id. reticulata, p. 18. 
Id. Seguenzae, p. 18. 
Zenobia, p. 64. 
Zenobia carinatissima, p. 64. 
Ip. cinctella, p. 64. 
Id. var. villafranchiana, p. 64. 
Zua, p. 75. 
Zua exigua, p. 75. 
Wvilliamia, p. 88. 
Williamia, p. 20. 
Williamia Gussonii, p. 88. 
Id. var. parvolaevis, p. 88. 
Id. var. pliocenica, p. 88. 
Id. var. miocenica, p. 88. 
Id. taurosimplex, p. 88. 
