INDEX 
Mutelina, 413, 428, 429, 430, 431, 433, 
436, 439. 
Muteline, 71, 410, 411, 444. 
mwayana, Spatha, 421. 
mweruensis, Cleopatra, 292, 293, 297, 
597. 
Melanoides, 254, 260, 265, 568, 597. 
Pl. XXII, figs. 20-22. 
Neothauma, 209. 
Parreysia, 380, 384, 392, 569, 597. 
Pl. XXXI, figs. 8-10. 
Unio, 392. 
Viviparus, 74, 202, 206, 208, 596, 
597. Pl. XEX, fie, 6. 
Mya, 85. 
Mya, 362, 388. 
Mycetopine, 409. 
Mycetopoda, 599. 
Mycetopus, 428. 
Myosotella, 104. 
myosotis, Auricula, 108. 
Myrica, 514. 
myrmecoon, Ptychotrema, 513. 
Myrsine, 510. 
Mysorella, 70, 213, 220, 588, 589. 
Mysoria, 220. 
mystica, Nodularia, 384. 
mysticus, Unio, 384. 
Mytilacea, 336. 
Mytilina, 456. 
Mytiloides, 455. 
myttiloides, Enocephalus, 455. 
Mytilomya, 456. 
Mytilopsis, 455, 456. 
Mytilus, 563, 565. 
Mytilus, 427, 430, 455, 456. 
Naiadacea, 336. 
nairobensis, Planorbis, 117. 
naivashaénse, Spherium, 348. 
Nakuruélla, 515. 
nana, Burnupia, 151. 
Nanina, 475. 
nanus, Ancylus caffer var., 151. 
nassa, Edgaria, 86, 329 (Fig. 69c-d), 
330, 335, 586, 590. 
Melania, 326, 330, 331. 
Nassopsis, 324, 326, 330. 
637 
Paramelania, 328, 330, 331. 
Pyrgulifera, 331. 
Tiphobia, 324, 326, 330, 331. 
nassatella, Edgaria, 335. - 
Edgaria grandidieriana {., 335. 
Paramelania, 335. : 
nassatiformis, Edgaria livingstoniana f., 
331. 
Edgaria nassa var., 331, 590. 
Paramelania, 331. 
Paramelania nassa var., 331. 
Nassopsidia, 328, 335. 
Nassopsis, 249, 299, 324, 326, 327, 328, 
329, 330, 331, 332, 333. 
nasuta, Physopsis, 143. _ 
natalensis, Burnupia caffer var., 151. 
Corbicula, 340. 
| Ferrissia, 150. 
Inmnea, 108, 110. 
Inmneus, 110, 111. 
Lymnea, 89, 92, 95, 108, 109, 110, 
521, 540, 556, 568, 572, 577, 587, 
597... Pl. XB, fig. 3 
Neritina, 158. . 
Physa, 148. 
Physopsis, 143. 
Planorbis, 125. 
Spatha, 423. 
Unio, 384. 
natalica, Physa, 143. 
natalis, Planorbis, 125. 
Natalina, 484, 485. 
natans, Trapa, 90. 
Natica, 565. 
Nautilina, 124. 
Nautilus, 128. 
navigioliformis, Unio, 378. 
Nealexia, 104. 
neavei, Lanistes, 187, 192. 
Nematurella, 227. 
nemoralis, Helix, 470, 475. 
Neocossyphus, 478. 
Neothauma, 70, 202, 
588, 589, 597. 
Neothauma, 209. 
neothaumeformis, Bulimus, 216. 
Bythinia, 216. 
Neripteron, 162. 
210, 582, 583, 
