290 



[NDEX. 



marica, 129, 138. 

 maritima, 259. 

 marmorata, 153. 

 maxima, 187, 201. 

 Megadesma, 239. 

 membranacea, 101. 

 menstrualis, 43. 

 Mercenaria, 113. 

 mercenaria, 114. 

 Meretrix, 34. 

 meretrix, 36. 

 Meroe, 41. 

 Meroe, 41. 

 Meroeformis, 163. 

 mesodesma, 150, 

 Mexicana, 260. 

 minima, 87. 

 minor, 96, 281. 

 minus, 281. 

 minuta, 73, 157. 

 mirabile, 269. 

 mirabUis, 207, 269. 

 mitis, 142. 

 modesta, 17, 23, 72, 



79, 270. 

 modestum, 270. 

 modioliforme, 283. 

 modioliformis, 283. 

 monilifera, 109. 

 monstrosa, 197. 

 Morphina, 37. 

 Mortoni, 114. 

 Moussoni, 227. 

 multicostata, 106. 

 multiradiata, 63. 

 multispinosa, 76. 

 multistriata, 64. 

 Muscaria, 89. 

 Mysia, 30. 



N. 

 nanus, 14. 

 Naranio, 215. 

 nebulosa, 151. 

 neglecta, 134. 

 Nepeancnsis, 230. 

 nigella, 263. 

 nitens, 8, 174, 227. 

 nitida, 158, 250, 272, 

 277. 



nitidula, 47, 256. 

 nitidum, 271, 277. 

 nivea, 212. 

 nobilis, 7, 78. 

 nodulosa, 110. 

 Normandianum, 277. 

 notabilis, 256. 

 notata, 114. 

 Novae Zelandiaj, 272. 

 nucleus, 264. 

 nucula, 54. 

 nummulina, 88. 

 Nuttallii, 135, 188. 

 Nux, 261. 

 Nux, 263. 



0. 



obesa, 59, 238. 

 obliqua, 275, 276. 

 obliquala, 65. 

 obliquum, 275. 

 oblonga, 86, 103, 192, 



257. 

 obovalis, 154. 

 obscura, 158, 232. 

 obscurata, 169. 

 obsoleta, 184, 230. 

 obtusale, 276, 278, 



279. 

 obtusalis, 279. 

 occidens, 223. 

 oculata, 81. 

 opacus, 187. 

 opima, 151. 

 optica, 93. 

 orbicularia, 273. 

 orbicularis, 273. 

 Orbignyi, 26. 

 orienta{is,31,227,228. 

 ornata, 95. 

 ornatissima, 132. 

 ovalea, 166. 

 ovaliua, 229. 

 ovata, 130. 

 oviformis, 245. 

 ovum, 34. 



pacifica, 61. 

 pallescens, 78. 



pallida, 145, 247. 

 palustre, 275. 

 palustris, 275. 

 pannosa, 79. 

 Panormitana, 220. 

 Paphia, 160. 

 Paphia, 126. 

 papilionacea, 168. 

 Papua, 250. 

 papyracea, 197. 

 Paranensis, 231. 

 parasiticum, 280. 

 partumeia, 266. 

 Patagouica, 9. 

 patella, 271. 

 Paupercula. 153, 158. 

 Paytensis, 74. 

 pectinata, 90. 

 pectinula, 131. 

 pectoralis, 62, 82. 

 pectorina, 139. 

 Pectunculus, 73. 

 pellucida, 67. 

 penicillata, 16. 

 Pennantii, 144. 

 Pera, 274. 

 perforans, 180. 

 Peronii, 146, 156. 

 perplexa, 176. 

 perpusillum, 285. 

 perpusillus, 281. 

 personata, 84. 

 peruviana, 125, 212, 



259. 

 petalina, 175. 

 petechialis, 36. 

 Petiti, 189. 

 Pefricola, 206. 

 Pfeifferi, 93, 275. 

 phaseohna, 172. 

 phasianella, 64. 

 Philippii, 72, 146, 

 Philippinarum, 39, 



179,235. 

 pholadiforrais, 211. 

 Phymeroda, 261. 

 Phymisoda, 261. 

 picta, 42, 95, 

 pinguis, 151. 

 piperita, 59. 



