148 
Conus pondevosus, vii. 
Conus tesselatus, vii. 
Cophinoceras Eifelense, xxii. 
Coralliophaga, 54, 81, 134 
Coralliophaga covalliophaga, xxxii. 
Coralliophila, 81 
Corbicula consobrina, xviii. 
Corbula sulcata, xix. 
Corburella, 49 
Cosmoceras spinosum, xxii. 
Cowry. See Cyprea. 
Craspedochilus cinereus, Embryo, 
xxix. 
Crassatella, 64 
Crassatella pulchva, xviii. 
Cremnoconchus, 59 
Cresis acicula, xxvi. 
Crioceras, 38 
Crioceras cristatum, xxii, 
Cryptochiton, 102 
Cryptoplax, 102 
Cryptoplax : radula, iii. 
Cryptoplax larvaformis, ix. 
Ctenidium, 7 
Ctenodonta, 45 
Cuspidavia cuspidata, xx. 
Cuspidariide, 35 
Cuvieria, 61 
Cuvievia columnella, xxvi. 
Cyclonema, 45 
Cyclophoridz, 60, 73 
Cyclophovus involvulus, x, 
Cyclostomatide. See Poma- 
tiida, 
Cylindvites acutus, xii. 
Cylindrobullina, 47 
Cymatium olearium, xxviii. 
Cymba, 88 
Cymbulia, 61 
Cymbulia proboscidia, xxvi. 
Cyprea (Cowry), a, 21, 63, 97 
Cypraa Algoénsis, x. 
Cypraa capensis, v. 
Cyprea guttata, 144 
Cyprea moneta, 142 
Cyprea testudinaria, xxvi. 
Cyprina, 63 
Cyprina Islandica, xviii. 
Cyrenidz, 49, 58 
THE LIFE OF THE MOLLUSCA 
Cyvtodaria, 63 
Cyrtodonta, 45 
Cyrtolites, 45 
Daudebardia brevipes, xiii. 
Dawsonella, 47 
Decapoda, 42 
Delphinula laciniata, ix. 
Dendronotus frondosus, 123, xii. 
Dendvopupa, 47 
Dentaliidee (Elephant’s - Tusk 
Shells), 10, 26 
Dentalium, 26, 47, 55, 95, 142 
Dentalium, structure of, xv. 
Dentalium elephantinum, xv. 
Dentalium leptoskeles, 56 
Dentalium Taventinum, Embryo, 
xxix. 
Despoenidz, 60 
Development of Embryo, 92 
Dextral shells, 18 
Diaphora tuba, 98 
Dibranchia, 40, 42, 127, 132 
Dibranchiate Cephalopod shells 
compared, xxiv. 
Dimyaria, 34 
Dipsaccus spivatus, xi. 
Diseases causéd by Mollusca, 
143 
Dispersal of Mollusca, 83 et seqq. 
Distribution, 51 s 
Distribution: Land “ Regions,’’ 
Distribution: Marine “ Pro- 
vinces,’’ 62 
Diwara, 142 
Docoglossa, 10, 24 
Dog-Periwinkle. See Purpura. 
Dog-Whelk, See Nassa. 
Dolabella Rhumphii, v., xii. 
Dolium, 94 
Dolium perdiz, ii. 
Dolium galea, x. 
Donax, 119 
Donax denticulatus, xviii. 
Doris, 74 
Dosinia exoleta, xix. 
Doto, 122 
Doto coronata, 123 
