638 
Nerita, 157. 
Nerita, 157, 158, 159, 161, 162, 164, 165, 
168, 169, 170, 203, 242, 246, 251, 
256, 266, 267. 
Neritxa, 158, 161, 162. 
Neritide, 70, 97, 98, 156. 
Neritilia, 165. 
Neritiliine, 70, 165. 
Neritina, 70, 157, 165, 521, 522, 527, 
539, 561, 562, 565, 566, 568, 590, 
600. 
Neritina, 308. 
Neritine, 70, 157. 
neritinoides, Lithoglyphus, 307. 
Rumella, 308. 
Stanleya, 307, 308 (Fig. 60), 589. 
Tanganyicia, 307. 
nerttoides, Lithoglyphus, 307, 308. 
Neritina, 308. 
Stanleya, 310. 
Neritopteron, 162. 
Neritostoma, 108. 
Neropterum, 162. 
Nesopupa, 485, 486. 
Nettion, 539. 
neumanni, Bithynia, 216. 
Bulimus, 216. 
Bythinaa, 216. 
Centropus leucogaster, 477. 
nevilliana, Pila, 171. 
newcombiana, Brazzxa, 427. 
ngesiana, Parreysia, 384, 389, 390, 577. 
PI. XXXII, fig. 11, 
ngestanus, Unio, 389. 
nguigmiensis, Nodularia, 384. 
Unio, 384, 406. 
nickliniana, Paludestrina, 522. 
nidus hirundinis, A’theria, 451. 
Aitheria heteromorpha mut., 451, 452, 
524. 
niger, Helixarion, 413. 
nigra, Paludina, 291. 
Unio hauttecceuri var., 382. 
nigricans, Ampullaria, 176. 
Homorus kwidschwiensis, 512. 
Pila, 176. 
Nigriculina, 272. 
nigrita, Melania, 274. 
INDEX 
nigritana, Melania, 272, 274, 277. 
Nigritella, 272. 
nilotica, Attheria, 451. 
Ampullaria, 195. 
Burtoa, 496, 499, 503, 512. 
Burtoa nilotica, 499. 
Corbicula, 340. 
Corbicula, 345. 
Hagedashia hagedash, 538. 
TIridina, 428, 436. 
Mutela, 410, 412, 429, 435, 436, 
516, 573; 08/7. Fi. MAIL, fig. 1. 
Neritina, 158. 
Nodularia, 384, 385, 402. 
Paludina, 206. 
Physa subopaca var., 147. 
Spatha, 412, 439. 
Valvata, 243. 
Niloticiana, 448. 
niloticus, Lanistes, 195. 
Unio, 384, 400, 402. 
Varanus, 474. 
nimoulensis, Lamnzxa, 110. 
Lymnea, 110. 
nitens, Auricula, 102. 
Nitra, 400. 
nitida, Galatera cumingit var., 362. 
Segmentina, 129, 130. 
nitidellus, Segmentina, 90, 95. 
nitidissimus, Lanistes, 195. 
Meladomus, 195. 
nitidus, Planorbis, 128, 129. 
nobrei, Ptychotrema, 602. 
noctiluca, Lampyris, 471. 
nodicincta, Melania, 251, 256. 
Nodularia, 378, 379, 380, 381, 382, 383, 
384, 385, 386, 387, 392, 393, 394, 
400, 401, 402, 406, 407, 408. 
nodulosa, Nyassia, 256. 
normalis, Viviparus unicolor var., 207. 
nosophora, Blanfordia, 94, 95. 
Katayama, 94. 
Nothapalus, 476, 490, 492, 506, 509, 510, 
512, 515, 601. 
noticola, Hydrocena, 166. 
Nsendwea, 602. 
nsendweensis, Cleopatra, 75, 292, 295 
(Fig. 55a), 296, 556, 569. 
