( ^3 ) 



INDEX. 



ACHATINA, 182. 



,, acicula, 182. 



Acme, 187. 



,, lineata, 187. 

 Ancylus, 68. 



,, fiuviatilis, 69. 

 ,, lacustris, 71. 

 Anodonta, 16. 



,, anatina, 18, 



cygnea, 17, 

 AQUATIC, I. 

 Arton, 76. 

 ,, ater, 77. 

 ,, flavus, 77. 

 ,, hortensis, 78. 



Balia, 167. 



,, perversa, 168. 

 BIVALVES, I. 



BULIMUS, 146. 



,, acutus, 146. 

 ,, montanus, 147. 



Bythinia, 27. 



,, Leachii, 30. 



,, tentaculata, 28. 



carychiid.e, 183. 

 Carychium, 184. 



,, minimum, 184. 



Clausilia, 169. 



,, biplicata, 175. 



,, laminata, 176. 



„ parvula, 177. 



„ Rolphii, 174. 



„ rugosa, 171. 



„ solida, 178. 



Cochlicopa, 178. 



,, lubrica, i8r, 



,, tridens, 178. 



CONCHIFERA, i. 



Cyclostoma, 185. 



,, elegans, 186. 



CYCLOSTOMATIDiE, 185. 



Dreissena, 20. 



,, polymorpha, 20. 



DREISSENIDiE, 19. 



GASTEROPODA, 21. 



Geomalacus, 79. 



,, maculosus, 79. 



Helices, 109, 

 Helicid^e, 90. 

 Helix, 109. 



aculeata, iir. 



arbustorum, 120. 



aspersa, 114. 



Cantiana, 121. 



caperata, 136. 



Cartusiana, 122. 



concinna, 124. 



ericetorum, 137, 



fusca, 130. 



hispida, 126, 



hortensis, 118. 



hybrida, 118. 



lamellata, no, 



lapicida, 142. 



nemoralis, 117, 



obvoluta, 144. 



Pisana, 132. 



