648 
Thapsia, 503. 
Varicostele, 503. 
ruwenzoriense, Pisidium, 351, 352, 521. 
Trichotoxon, 509. 
ruwenzoriensis, Halolimnohelix, 511. 
Helixarion, 509. 
Limicolariopsis, 509. 
Marconia lata, 509, 512. 
Subuliniscus, 509. 
salicifolia, Myrica, 514. 
salinarum, Planorbis, 117. 
salleana, Paludestrina, 223. 
Salticella, 471. | 
sambesianus, Vivipara unicolor var., 204. 
Viviparus capillatus var., 204. 
sancti-pauli, Melania, 275. 
Potadoma, 275. 
sandbergeri, Lanistes, 184. 
sangara, Neritina, 161. 
Sanicula, 509. 
sare, Aspatharia, 414. 
Mutela, 414. 
Sarcophaga, 471. 
Sarmatium, 22, 45. 
Sarothrura, 476. 
saturata, Limicolaria, 509, 512, 513, 514, 
515. 
saulcyi, Bulinus contortus var., 136. 
Physa, 136. 
Saulea, 167, 168, 170, 171, 177, 546, 600. 
saxea, Ampullaria, 169. 
scabra, Melanoides, 254. 
scabrispiculis, Cervospongilla, 453. 
scabrum, Buccinum, 254. 
Scexvola, 133. 
scalaris, Bulinus, 141, 142, 587. 
Paludina, 142. 
Physa, 142. 
Pyrgophysa, 142. 
scalata, Physa, 135. 
~ Scapha, 159. 
schackoi, Bulinus, 91, 137. 
Isidora, 137. 
Schefflera, 509. 
schepmani, Lanistes congicus, 186, 189, 
190. 
Schistosoma, 91, 92, 93, 94, 95, 135, 145. 
INDEX 
Schistosomatium, 94. 
schmackeri, Planorbis, 90, 95. 
schmidtii, Bulinus, 141. 
schnitzleri, Leevicaulis, 503. 
schoeniclus, Emberiza, 474. 
schoutedeni, Achatina, 519. 
Caridina togoensis var., 64. 
Cleopatra, 292, 298, 569. 
Potadoma, 75, 273, 275, 277 (Fig. 
46), 550. Pl. XX, figs. 12-13. 
schubotzi, Guttera plumifera, 475, 476. 
Helicarion, 513. | 
Spongilla, 453. 
schitti, Turacus, 477. 
schweinfurthi, Achatina, 496, 602. 
Burtoa nilotica, 496. 
Hydrobia, 222. 
Lanistes, 187. 
Meladomus, 187. 
Paludestrina, 222. 
Umio, 76, 381. 
Unio parreyssi var., 76, 381, 385. 
scioana, Valvata 243. 
Valvata nilotica var., 243. 
Sciomyzide, 533. 
Scirpus, 576. 
scolopaceus, Aramus, 536. 
Scopus, 5. 
scripta, Dresseina, 455. 
Sculptaria, 484, 486. 
sculptus, Lanistes, 200. 
Scutibranchiata, 69, 97, 156. 
Scyllaridz, 43. 
Scyllaridea, 42. 
Scyllarus, 2, 7, 8, 48. 
Segmentaria, 129. 
Segmentina, 69, 90, 95, 96, 124, 128, 
043, 556, 568, 587. 
selle, Gulella, 509. 
semiaratus, Melampus, 100. 
semicancellata, Melania, 249. 
semicorrugata, Aspatharia, 414, 419, 569. 
Spatha, 419. 
semicostulata, Truncatella, 241. 
semifusca, Achatina schweinfurthi var., 
602. 
semulzxvis, Syrnolopsis minuta var., 232. 
semilunaris, Htheria, 450. 
