INDEX 
semilunata, Aitheria, 450, 451. 
Etheria, 447. 
semi-lunata, Etheria, 450, 452. 
seminium, Trachycystis, 602. 
semiplicata, Physa, 141. 
semiplicatus, Bulinus, 141. 
Melampus, 101. 
Semisinus, 288. 
Semisulcospira, 96. 
semitorquata, Streptopelia, 477. 
semperlirata, Potadoma liricincta, 
75, 275, 282, 569. Pl. XX VI, figs. 
10—10a. 
senaariensis, Bulimus, 215, 216. 
Paludina, 216. 
Senecio, 511, 514, 515. 
senegalensis, Anodonta, 413. 
Anona, 495. 
Bulinus, 133, 134, 137, 188, 139 
(Figs. 12a-c), 140. 
Bullinus, 138. 
Cleopatra, 289, 292. 
Clibanarius, 2, 7, 8, 51, 52. 
Corbicula, 340. 
Cyrenella, 376. 
Cyrenoida, 375, 376 (Fig. 84), 565, 
569. 
Cyrenoidea, 376. 
Lanistes, 187. 
Meladomus, 187. 
Nerita, 157. 
Neritina glabrata var., 159. 
Paludina, 292. 
Physa, 138. 
Podica, 5, 538. 
Podica senegalensis, 5, 538. 
senegalica, Aitheria, 451. 
Mutelina, 418. 
senilis, Aspatharia trapezia var., 422. 
Spatha trapezia var., 422. 
sennaaricum, Digyreidum, 216. 
sennaariensis, Unio, 385. 
sennariensis, Bithynia, 216. 
sericata, Halolimnohelix, 503. 
sericina, Isidora, 137. 
sericinus, Bulinus, 137. 
Sermyla, 264. 
Serratispherium, 347. 
649 
servainiana, Edgaria, 335. 
Edgaria livingstoniana f., 335. 
Grandidieria, 396. 
Grandidieria burtoni var., 396, 588. 
Hauttecceuria, 307. 
Paramelania, 335. 
Umio burtoni var., 396. 
servarmanum, Neothauma, 211. 
Sesarma, 164, 566. 
sethsmithi, Guttera edouardi, 475. 
shambiensis, Celatura xegyptiaca var., 
378. : 
Nodularia xgyptiaca var., 378. 
shireensis, Unio, 388. 
siamensis, Melampus, 101. 
Siderocapsa, 529. 
Sideroxylon, 509. 
Sidula, 105. 
silongweensis, Unio, 385. 
Silpha, 471. 
Silphide, 471. 
silvatica, Pleuroprocta, 492. 
silvaticum, Ptychotrema, 492, 509. 
simonsi, Melania, 256. 
Vivipara, 205. 
simpsoni, Mutela, 429, 4380. 
sinensis, Assiminea, 242. 
Clonorchis, 89, 90, 95. 
Eupera, 354. 
Syncera, 242. 
singularis, Edgaria, 332, 590. 
Grandidieria, 399. 
Hauttecceuria, 307. 
Micronyassia, 256. 
Mutela, 430. 
Mutelina, 430. 
Paramelania, 332. 
sinica, Assiminea, 242. 
sinistrorsa, Paludina, 195. 
Subulina, 602. 
sinistrorsus, Lanistes, 195. 
sinuata, Aspatharia, 411, 414, 416, 417, 
419, 540, 559,569... Pl. XAXXYV, 
figs. 1-4; Pl. XX XVI, figs. 1-3a. 
Spatha, 417. 
Spatha decorset var., 414. 
Sirenia, 599. 
sistanica, Amnicola, 213. 
