120 I MOLLUSCHI DEI TERRENI TERZIARI DEL PIEMONTE ECC. 
Ancylus acutus, p. 19. 
ld. Gussonii, p. 88. 
Anisochiton, p. 89. 
Anisomyon, p. $$. 
Antale, p. 93. 
Antale abissorum, p. 98. 
Id. var. astensis, p. 104. 
Id. var. atava, p. 102. 
Id. Bouei, p. 98, 107, 109. 
Id. var. costulatior, p. 101. 
Id. var. decemcostulata, p. 103. 
Id. dentale, p. 100, 103, 104. 
Id. var. duodecimcostata, p. 103. 
Id. fossile, p. 98, 99. 
Id. var. inaequicostata, p. 103. 
Id. var. maculatellata, p. 105. 
Id. var. mutabilis, p. 102. 
Id. novemcostatum, p. 101, 102, 
104, 110. 
Id. var. octogonalis, p. 102. 
Id. var. paucicostulata, p. 105. 
Id. var. perlaevis, p. 99. 
Id. var. perstriolata, p. 98. 
Id. var. pseudoaprina, p. 102. 
Id. var. quatuordecimcostata, p. 105. 
Id. var. raricostata, p. 100. 
Id. senegalense, p. 104. 
Id. var. septemeostata, p. 102. 
Id. var. sexdecimcostata, p. 105. 
Id. var. tauraspera, p. 99. 
Id. taurocostatum, p. 101. 
Id. var. taurogracilis, p. 99. 
Id. var. tredecimcostata, p. 104. 
Id. var. undecimcostata, p. 103, 104. 
Id. vitreum, p. 100. 
Id. vulgare, p. 98, 99, 100. 
Antalis agilis, p. 98. 
Id. striolata, p. 98. 
ARIONIDAE, p. 61. 
Atis utriculus, p. 46. 
Auricula acuta, p. 80. 
Id. biplicata, p. 37. 
Id. Brocchii, p. 77, 78, 79. 
Id. dentata, p. 78. 
Id. Dutemplei, p. 79. 
Id. Firmini, p. 79. 
Id. Grateloupi, p. 79. 
Id. inflata, p. 32. 
Td. maculata, p. 34. 
Id. marginata, p. 77. 
Id. myosotis, p. 77, 78, 79. 
Id. myotis, p. 77, 78, 79. 
Id. pisolina, p. 79. 
Id. pyramidalis, p. 78, 79. 
Id. Serresi, p. 80. 
Id. tornatilis, p. 33. 
Auricularia biplicata, p. 37. 
Id. inflata, p. 32. 
Id. maculata, p. 34. 
Id. tornatilis, p. 33. 
AURICULIDAE, p. 77. 
Buccinum acicula, p. 76. 
Buliminus, p. 69. 
Butimus algira, p. 57. 
Id. sinistrorsus, p. 74. 
Bulla, p. 47. 
Bulla acuminata, p. 42. 
Id. ampulla, p. 47. 
Id. Bellardii, p. 39. 
Id. Brocchii, 51, 52, 53. 
Id. var. brunnea, p. 47. 
Id. burdigalensis, p. 53. 
Id. catena, p. 54. 
Id. clathrata, p. 51. 
Id. clavata, p. 40. 
Id. cochlis, p. 39. 
Id. var. colligens, p. 47. 
Id. conulus, p. 50, 51. 
Id. convoluta, p. 49. 
Id. crassiplicata, p. 52. 
Id. cylindracea, p. 49. 
Id. cylindrica, p. 49. 
Id. d’Anconeana, p. 48. 
Id. decussata, p. 41. 
Id. elongata, 50, 53. 
Id. Fortisii, p. 44. 
Id. fusiformis, p. 42. 
Id. Grateloupi, p. 44. 
Id. grandis, p. 45. 
Id. hydatina, p. 48. 
Id. hydatis, p. 48. 
Id. lignaria, p. 43, 44. 
Id. mamillata, p. 38. 
Id. miliaris, p. 46. 
Id. obtusa, p. 41. 
Id. ovula, p. 51. 
Id. ovulata, 51, 52, 53. 
Id. plicata, p. 45. 
Id. radians, p. 39. 
Id. scabra, p. 54. 
Id. scaphander, p. 44. 
Id. simulata, p. 37. 
Id. spirata, p. 38. 
Id. striata, p. 45, 46, 47. 
Id. subampulla, p. 47, 48. 
Id. subconulus, p. 50. 
Id. var. taurinensis, p. 47. 
Id. tenuisulcata, p. 40. 
Id. testiculina, p. 52. 
Id. truncata, p. 40, 52. 
Id. truncatula, p. 40. 
Id. umbilicata, p. 50. 
Id. uniplicata, p. 45. 
Id. utriculus, p. 45, 46. 
Id. ventrosa, p. 55. 
Id. Weinkauffi, p. 48. 
Bullaea angustata, p. 54. 
Id. rostrata, p. 54. 
Id. scabra, p. 54. 
Bullaeidae, p. 54. 
BULLIDAE, p. 47. 
Bullina Agassizi, p. 38. 
Id. cylindracea, p. 49. 
Id. discors, p. 49. 
Id. lajoncaireana, p. 38. 
Id. spirata, p. 38. 
Id. striata, p. 51. 
Bullinella, p. 49. 
Bullinella acrotoma, p. 50. 
ld. var. convoluta, p. 49. 
