INDEX OF SPECIES. 



67 



Iiucina 



pectinata, 23, 102, 128, 154, 



248, O 308, 364, P 98. 

 pisum, 60. 

 prolongata, 248, 308, P 



100. 

 punctata, 47, O '74, 187, 



232, 248, 307,0 351, 



352, P 96, P 97.; 

 reticulata, P 99. 

 scabra, 9. 



semireticulata, 248, P 102. 

 serricata, P 104. 

 squamosa, P 99. 

 telliuoides, 201, 279. 

 tenuisculpta, 88, 97, 128. 

 tigerina, 63, 153, 243, 248, 



282, 308, 350, 363, 



P 96, P 97. 

 undata, 272. 

 unifasciata, U 205. 

 Lucinopsis 



subquadrata, P 62. 

 undata, Q 231. 

 Lunatia 



algida, 17,0336,0348. 



aperta, 71. 



Bonplandi, 337. 



caurina, 9, 147, 336, 348. 



flava, 336. 



Gallapagosa, 337, 360. 



herculaea, 17, 147, 336, 



348. 



heros, 168. 

 impervia, 336. 

 Lewisii, 17, 23, 25, 82, 101, 147, 



1 68, 336. 

 lurida, 337. 

 otis, 337, 360. 

 pallida, 71, H7, l6 9- 

 pallidoides, 71. 

 ravida, 60. 

 septentrionalis, 71. 

 soluta, 9, 147. 

 tenuilirata, 214, 261, 337, 



P45 1 - 



Luponia 



albuginosa, 27, 32, 109. 



fimbriolata, 154. 



nigropunctata, 328, 360. 



semipolita, 154. 



Sowerbyi, 27, 109. 



spadicea, 9, 23, 143. 



spurca, 32, 328. 

 Lutraria 



caualiculata, 211. 



capax, 11, 86, 209, 213, 

 219. 



carinata, 211. 



elegans, 204, 280. 



inflata, 296. 



lineata, 61. 



maxima, n, 17, 86, 192, 

 209, 219, 224, 300. 



nasuta, 232. 



Nuttallii, 61, 69. 



papyria, 81. . 



transmontana, 81. 



Traskei, 76. 



undulata, 211, 227, 232, 

 280, U 200. 



veutricosa, 29, 211, 227, 

 232,0 246, P 51, P 548, U 

 200. 

 Lutricola 



alta, 22, 80, 81, 125, 301. 



Dombeyi, 40, 301. 



ephippium, 301. 



viridotincta, 105. 

 Lymneea. See Limnea. 

 Lyonsia 



arenosa, 73. 



bracteata, 124, 300. 



Californica, 22, 26, 124, 167, 

 194, 226, 300, O 349, 

 35 1 , U 199, V 211. 



cuneata, Q, 229. 



diaphana, 40, 284, 287, 

 301, Q 228. 



flabellata, 73. 



Floridana, 119, 124, 169. 



gibbosa, 222. 



