INDEX, 



315 



Cyclas, 52. 57. 69. 279. 282. 



sequata, 280. 



amnica, 286. 



angulata, 44. 



appendiculata, 285. 



calyculata, 17. 50.281. 286. 



compressa, 280. 



cornea, 18. 41. 48. 278. 



elongata, 44. 



fontinalis, 284. 



gibba, 284. 



gibbosa, 280. 



lacustris, 17. 25. 281. 



major, 44. 



media, 43. 



membranacea, 43. 



obliqua, 286. 



obtusalis, 282, 283. 



palustris, 286. 



parva, 44. 



pulchra, 43. 



pusilla, 283. 



rivicola, 34. 48. 279 



stagnicola, 280, 281. 



subquadrata, 44. 



Cyclostoma, 67. 89. 222, 223. 

 274. 



achatinum, 91. 



acutum, 51. 88. 



contectum, 91. 



elegans, 46. 48. 54. 70. 



273. 275. 



. ferrugineum, 18. 



impurum, 93. 



lineatum, 223. 



lineolata, 274. 



marmorata, 275. 



obtusum, 97. 



productum, 16. 



simile, 51. 94. 



sulcatum, 17. 



viviparum, 90. 



Cyclostomidse, 102. 

 Cypra?a, 193. 

 Cyrena, 287. 



consobrina, 42. 



trigonula, 42. 



Damaris, 293. 

 Detracia bullasoides, 20. 

 Diatropha contorta, 16. 

 Dimyaria, 277. 



p 2 



Doubtful species, 5. 

 Dreissena, 69. 300. 



polymorpha, 4. 299, 30O, 



301. 



Dreissenadae, 277. 299. 

 Drilus flavescens, 134. 



Elisma, 185. 



fasciata, 185. 



Ena, 181. 



montana, 182. 



obscura, 183. 

 Enopthalma, 79. 

 Euglesa Henslowiana, 284. 

 Euglesia, 282. 



Fusus Turtoni, 54. 



Gasteropodes, 72. 77. 

 Genera, Table of, 66. 

 Geographical distribution, 24. 

 Gordius, 232. 

 Gulnaria, 232. 



auricularia, 232. 



lacustris, 234. 236. 



peregra, 233. 



Gymnobranchiata, 77. 



Helices, 23, 198, 223. 229, 

 Helicidae, 56. 101. 109. 164, 

 Helicina, lia 

 Helicodontae, 198. 

 Helicolimax Audebardii, 121. 



elongatus, 9. 



pellucidus, 120, 121. 



Helicophanta brevipes, 9, 



Heligona lapicida, 140. 



Helix, 24. 66. 68. 86. 98. 100. 



141. 177. 181. 

 aculeata, 49. 70. 142. 149, 



150. 



acuta, 12. 18. 14O. 185. 



196. 



alba, 259, 260. 



albella, 9. 163. 165, 166. 



albina, 158. 



arbor ea, 27. 



Alderi, 148. 171. 



alliacea, 169. 



alii aria, 169. 



aperta, 36. 53. 127. 



arbustorum, 23. 45. 47.J37. 



