6538: 
Tridina, 442, 587. 
Pleiodon, 442. 
Pliodon, 442. 
vyssert, Mutela, 437. 
. Neothauma, 212. 
wagenia, Melanoides, 75, 252 (Fig. 
41), 254; 262, 541, 568. PI. 
XXII, fig. 14. | 
wahlbergi, Aspatharia, 411, 420, 422, 423. 
Bulinus, 141. | 
Iridina, 423. 
Physa, 141. 
walikalensis, Potadoma liricincta, 
75, 272 (Fig. 45), 273, 275, 281, 
282, 568. Pl. X XVI, fig. 9. 
walkeri, Burnupia, 74, 152, 154, 568. 
Pl. XII, figs. 7—7a. 
wallert, Bithynia, 217. 
Bulimus, 216, 217, 576. 
Bythinia, 217. 
Wandolleckia, 472. 
waterloti, Physa, 147. 
wathenensis, Limicolaria, 499. 
webbei, Neritina, 159. 
Weihea, 509. 
weluitschi, Ampullaria, 176. 
Bulinus, 138. 
Cleopatra bulimoides var., 291, 296. 
Physa, 138. 
Pila, 176. 
welwitschii, Iridina, 430. 
Mutela, 430. 
werneana, Physa, 144. 
wernet, Ampullaria, 175, 188. 
Pila, 175, 176, 178, 183, 568, 576. 
westermani, Paragonimus, 91. 
weynsi, Achatina, 602. 
wheatleyi, Planorbis, 131. 
whitesidei, Himantornis hematopus, 538. 
wildemani, Achatina, 499. 
wilkei, Melampus, 101. 
wissmanni, Aspatharia, 75, 423, 424, 
(Fig. 92), 425, 449, 540, 558, 569. 
Pl. XXXVII, figs. 1-2. 
Spatha, 423. 
Spatha rubens var., 423, 424. 
Wollastonii, Lobelia 511, 514. 
INDEX 
woodwardii, Melania, 256. 
wyhegungaénsis, Parreysia, 388. 
xanthophaés, Nothapalus paucispira, 
476, 492. 
xenopi, Echinostomum, 92. 
Xenopus, 91, 92. 
Xerocerastus, 484. 
yokagawat, Metagonimus, 90. 
Zaira, 400. 
Zairia, 380, 399, 400, 407, 408, 569. 
zambesianus, Lanistes, 195. 
zambesiensis, Ancylus, 150. 
Ferrissia, 150. 
Unio, 386. 
Vivipara, 205. 
zambiensis, Melanoides langi, 75,. 
254, 260, 561, 568. Pl. XXII, 
fig. 3. 
Streptostele, 499. 
Thapsia, 499. 
zanguebarensis, Cleopatra, 290, 293. 
Melania, 298. 
Zanguebaria, 288. 
zanguebarica, Cleopatra, 293. 
zanzebarica, Physa, 138. 
zanzebaricus, Bulinus, 136, 138. 
zanzibarica, Limnxa, 114. 
zebra, Neritina, 158. 
zebriolata, Achatina, 499. 
zelebori, Corbicula, 341. 
zengana, Melania, 254. 
Melanoides, 254. 
zenkeri, Rhinomelania, 288. 
Semisinus, 288. 
zeyheri, Unio, 386. 
zibethica, Ondatra, 539. 
Zingis, 519. 
zonata, Cleopatra broecki var., 291, 296,. 
569. 
Halolimnohelix, 510. 
Lacunopsis, 315. 
Melania, 267. 
Spekea, 315. 
