INDEX 



Acella, 103. 

 Achatinidse, 118. 

 Agnatha, 118. 

 Agnathornorpha, 118. 

 Agriolimax, 121. 

 Akteophila, 109. 

 Alasmidonta, 75. 

 Albinula, 111. 

 Amnicola, 92. 

 Amnicolidae, 92. 

 Anculosa, 98. 



Ancylidse, 101. 



Ancylus, 101. 



Angitrema, 95. 



Angustula, 112. 



Anisopleura, 88. 



Anodonta, 72. 



Anodontoiden, 73. 



Aplexa, 101. 



Arcidens, 74. 



Ariopbantina-, 120. 



Armiger, 109. 



Aulacopoda, 118. 



Auriculidse, 309. 



Basommatophora, 99. 

 Bifidaria, 111. 

 Bythinia, 92. 

 Bythiniinse, 92. 



Calyculina, 84. 

 Campeloma, 89. 

 Carunculina, 67. 

 Carychium, 109. 

 Cincinnatia, 93. 

 Circinaria, 118. 

 Circinariidse, 118. 

 Cochlicopa, 113. 



Cocblicopidse, Hi 



Corneocyclas, 85. 

 Crenodonta, 78. 

 Cy progenia, 71. 

 Cvrenacea, 82. 



D 



Diagense, 71. 



Digenir, 70. 

 Dromus, 71. 

 Dysnomia, 63. 



E 



Elasmognatba, 113. 

 Elliptic, 76. 

 Endodontid®, 122. 

 Endodontic-, 122. 

 Eschatigense, 71. 

 Euconulua, 119. 

 Eurynia, 65. 

 Euthyneura, 99. 



Ferrissia, 101. 



Galba, 103. 

 Gastrodonta, 121. 



Gastropoda, 88. 

 (ilvphyalina, 119. 

 < roniobasis, 97. 

 Gonyodiscus, 122. 

 Gundlachia, 102. 

 Gyraulus, 108. 



H 



Helicidse, 114. 



Helicina, 88. 

 Helicinidse, s *. 



134 



