616 
cuneata, Mutela, 430. 
cunningtoni, Corbicula, 339. 
curta Bithynia costigera var., 220. 
Fischeria, 371. 
Gulella iridescens, 515. 
Iphigenia, 370, 371, 373, 374, 565, 
569. Pl. XXVIII, figs. 5-65. 
Mutela angustata var., 428, 429. 
Mutela complanata var. 429. 
Mutela dubia var. 428. 
Mutelina complanata var., 429. 
Spatha complanata var., 429. 
Unio hauttecceuri mut., 382. 
Unio lacoini var., 383. 
curvatula, Thapsia, 509. 
curvatum, Sarmatium, 22, 45. 
Curvella, 490, 492, 499, 503, 506, 509, 
512. 
curvelliforme, Pseudopeas, 492. 
custos, Pontonia, 40. 
cyamus, Unio, 380. 
cyanea, Congeria, 456. 
Corbicula subtruncata var., 341. 
Dreissena, 456. 
Cyanocyclas, 339. 
cyanoptera, Querquedula, 539. 
Cyathea, 508. 
Cyathopoma, 491, 492. 
Cychlide, 585. 
Cychrine, 470. 
Cyclas, 347, 348, 349, 354, 355. 
Cyclophoride, 97, 249, 468, 484, 491, 
599. , 
Cyclophorus, 490, 491, 492, 509, 513, 
517. 
Cyclostoma, 166, 183, 186, 207, 288, 291, 
470. 
cyclostoma, Limnotrochus, 319. 
cyclostomoides, Cleopatra, 291. 
Paludina, 291. 
cygnea, Anodonta, 524. 
cylindrus, Ptychotrema, 492. 
cymatonotus, Gulella disseminata, 503s 
Cyperus, 542, 571. 
Cyrena, 347, 359. 
Cyrena, 339, 340, 341, 344. 
Cyrenacea, 336. 
Cyrenastrum, 347: 
INDEX 
Cyrenella, 375, 376. 
Cyrenidex, 71, 336, 337, 388, 345, 359, 
600. 
Cyrenodonta, 375. 
Cvrenoida, 71, 375, 563, 565, 569. 
Cyrenoidea, 375, 376. 
Cyrenoides, 375. 
Cyrenoidide, 71, 336, 337, 375. 
cyrenopsis, Grandidieria, 396. 
cyrtonota, Physa, 138. 
Dafila, 539. 
dahomeyensis, Anodonta, 413. 
Aspatharia, 413. 
Spatha, 418. 
dakaénsis, Limnzus, 109. 
Lymnea, 109. 
damarana, Limnea, 109. 
Lymnea, 109. 
damoni, Melania, 321, 322. 
Paramelania, 299 (Fig. 566), 300 
(Fig. 57), 320 (Fig. 66), 321, 590. 
Pyrgulifera, 322. 
Tiphobia, 320, 321. 
Dardanine, 45. 
Dardanus, 2, 7, 8, 45. 
dautzenbergi, Bulinus, 140. 
Ceras, 492. 
Cleopatra, 75, 291, 
(Fig. 54), 556, 569. 
Curvella, 509, 512. 
Martelia, 228, 240, 589. 
Melanoides tuberculata var., 76, 
254, 257, 578. 
Paramelania nassa var., 330. 
Physa, 140. 
Streptostele, 492. 
Davainea, 88. 
de-albertisi, Nothapalus, 510. 
debaizer, Limnxa, 114. 
debilis, Nothapalus ccelatus, 509. 
decampsiana, Nodularia, 380. 
decampsianus, Unio, 380. 
deckeni, Ampullaria ovata var., 182s 
Deckenii, Lobelia, 511. 
decollata, Cerithidea, 249. 
Melania, 249. 
decorsei, Aspatharia, 413, 414. 
294, 295 
