( 203 ) 



INDEX. 



ACHATINA, 182. 



,, acicula, 182. 



Acme, 187. 



,, lineata, 187. 

 Ancylus, 68. 



,, fluviatilis, 69, 

 ,, lacustris, 71, 

 Anodonta, 16. 



,, anatina, 18, 



„ cygnea, 17. 



AQUATIC, I. 

 Arion, 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^, 183. 

 Carychium, 184. 



minimum, 184. 



Claus 



LIA, 169. 



biplicata, 175. 

 laminata, 176. 

 parvula, 177. 

 Rolphii, 174. 

 rugosa, 171. 

 solida, 178. 



COCHLICOPA, 178. 



,, lubrica, 181. 



,, tridens, 178. 



CONCHIFERA, I. 

 Cyclostoma, 185. 



,, elegans, 186. 



Cyclostomatid^, 185. 



Dreissena, 20. 



,, polymorpha, 20. 



Dreissenid^, 19. 



GASTEROPODA, 21. 

 Geomalacus, 79. 



,, maculosus, 79. 



Helices, 109. 

 Helicid^, 90, 

 Helix, 109. 



,, aculeata, ill. 



,, arbustorum, 120. 



,, aspersa, 114. 



,, Cantiana, 12 1. 



,, caperata, 136. 



,, Cartusiana, 122. 



,, coiicinna, 124. 



,, ericetorum, 137. 



,, fusca, 130. 



,, hispida, 126. 



,, hortensis, 118. 



,, hybrida, 118. 



,, lamellata, no. 



,, lapicida, 142. 



,, nemoralis, 117. 



,, obvoluta, 144. 



,, Pisana, 132. 



