618 INDEX 
Dreyssensia, 456. dux, Macrobrachium, 1, 7, 8, 31, 38, 
Pl. IV, fig. 2; 
Driessena, 456. 
Driessenide, 71, 336, 357, 455. 
Drilinew, 471. | 
Drilus, 470. 
dromauxi, Cameronia, 442. 
dromauzt, Unio, 407. 
Dromia, 20. 
droueti, Aspatharia, 414, 418. 
Spatha 414. 
dryas, Potadoma liricincta, 75, 275, 
282, 569. Pl. XXVI, figs. 11-1la. 
drymeoides, Cerastus 513. 
dubia, Mutela, 428, 429, 4380, 435. PI. 
XXXVITI, figs. 1-2. 
dubiosa, Burnupia mooiensis var., 151. 
dubtosus, Ancylus mooiensis var., 151. 
dubius, Mytilus, 427, 430. 
duchaillui, Buccanodon, 478. 
dufourii, Planorbis, 92, 95. 
dumesleanus, Unio, 380. 
dumesniliana, Ampullaria, 182. 
dumesnilianus, Unio, 380. 
dunkert, Physa, 142. 
duponti, Galatea, 363. 
Galateia, 363, 365. 
Nodularia, 380. 
Pseudogibbula, 248, 244 (Fig. 
40a—b), 553, 561, 568. 
Unio, 380. 
Unio, 381, 382. 
Vwipara, 203, 205. 
Viviparus, 205. 
dupontia, Cyrenoida, 375. 
dupontix, Cyrenella, 375. 
duponti, Cyrenoides, 375. 
dupuist, Cleopatra, 265, 569. 
Gulella, 601. 
Melanoides, 254, 265. 
Tiara, 265. 
durbanica, Auricula, 104. 
duveyrieriana, Edgaria, 333. 
Edgaria egregia f., 333. 
Hautteceeuria, 304. 
Paramelania, 333. 
Spekia, 315. 
Tanganyicia, 589. 
duveyrierianus, Lanistes, 186. 
34, 36, 37, 65. 
PLY Pl Vij feeds 
Palzemon, 33. 
dybowskii, Bulinus, 92, 95, 136. 
Bullinus, 136. 
Dygyreidum, 215. 
dykerana, Ptychotrema, 602. 
Dytiscide, 533. 
Dytiscus, 533. 
ebenina, Melania, 90, 95. 
Kchinostomum, 92. 
edgari, Nyassia, 255. 
Edgaria, 71, 86, 249, 299, 302, 323, 328, 
586, 590. 
edgarianum, Ptychotrema, 509. 
Edentulina, 490, 506. 
edouardi, Guttera, 475. 
eduardi, Unio, 404. 
edule, Cardium, 527. 
edwardi, Corbicula radiata, 75, 340, 
342, 343 (Fig. 73), 344, 577. 
edwardiana, Burnupia, 74, 151, 154, 
577. Pl. XII, figs. 4—4a. 
edwardsianus, Unio, 381. 
edwardsii, Alpheus, Biz. 
Leander, 25. 
Palsemon, 25. 
effusa, Ampullaria, 528. 
Egeria, 71, 75, 85, 337, 345, 359, 369, 
370, 540, 546, 562, 563, 568, 569. 
egregia, Crecopsis, 476. 
Edgaria, 333, 334, 335. 
Micronyassia, 255. 
Paramelania, 333. 
Egretta, 4. 
egyptiacus, Margarita, 406. 
ehrenbergianus, Melampus, 101. 
Eleis, 499. 
Elaphroxylon, Herminiera, 571. 
elata, Bythinia neumanni var., 216. 
Cleopatra pirothi var., 292, 298, 569. 
Physa tchadiensis var., 137. 
Viviparus unicolor var., 207. 
elatior, Bulinus forskalii var., 140. 
Cyclophorus, 509, 513. 
