INDEX. 



319 



Littorina, 85. 87. 89. 95. 

 - muriatica, 88. 

 ulvae, 24 88. 



ventricosa, 95. 

 Lottia, 69. 



Lucena pulchella, 142. 



Lutea, 243. 



Lymnsea auricularia, 232. 236. 



fasciata, 185. 



leucostoma, 242. 



lubrica, 188. 



minuta, 241. 



ovata, 234. 



peregra, 233. 



putris, 233. 



Lymnseus peregcr, 233. 



vulgaris, 233. 236. 

 Lymnea fontinalis, 97. 



fossaria, 226. 241. 



fragilis, 239. 



lacustris, 234. 



marginata, 234. 



tentaculata, 93. 



truncatula, 232. 



Lymneada?, 56. 

 Lymneus acutus, 234. 236. 



auricularius, 219. 232. 



detritus, 18. 



fragilis, 20. 



glaber, 15. 18. 



glutinosus, 246. 



Grayanus, 86. 



major, 1 J37. 



minutus, 241. 



ovatus, 234. 



pereger, 234. 236. 



speciosus, 238. 



stagnalis, 15. 19. 23. 236. 



237. 240. 



Macroceramus signatus, 20. 187. 

 Melampus, 59. 226. 



ovulum, 21. 



Melania, 44. 85. 



costata, 43. 



fasciata, 42. 



helvetica, 44. 



Matonii, 22. 



virginica, 44. 



Melaniadas, 79. 85. 

 Melanopsis, 44. 85. 

 attenuata, 43. 



Melanopsis brevis, 43. 



carinata, 43. 



tricarinata, 43. 



Mollusca, classes of, 72. 



Brachiata, 73. 



Reptantia, 73. 



Subsilientia, 73. 



Molluscans, crawling, 77. 

 Murex fuscatus, 22. 

 Mya, 43. 



Batava, 296. 



- margaritifera, 293. 



ovalis, 298. 



ovata, 296. 298. 



pictorum, 295, 296. 



Mysca Batava, 296. 

 ovata, 298. 



pictorum, 295. 



solida, 296. 298. 



Mytilus, 61. 299, 30O. 302. 



anatinus, 290, 291, 292. 



'area, 301. 



cellensis, 289. 



Chemnitzii, 301. 



cygneus, 289,290,291,292, 



293. 



dentatus, 29O. 

 edulis, 84. 



Hagenii, 301. 



incrassatus, 291. 293. 



lineatus, 301. 



maculatus, 290. 293. 



piscinalis, 290. 



polymorphus, 301, 302. 



stagnalis, 29O. 



Toreyi, 301. 



Volga?, 301. 



Volgensis, 301. 



Myxas Mulleri, 244. 



Nanina, 164. 



Nautahypnorum, 255. 



Nautili, 229. 



Nautilus lacustris, 193. 271. 



Navicella, 80. 



Nerita, 80, 81. 97. 



aperta, 43. 



elegans, 275. 



fasciata, 90. 



fluviatilis, 83. 



globosa, 43. 



globulosa, 95. 



