268 



INVERTEBRATE ZOOLOGY 



Cyathocephalus, 122, 126 

 Cyathomonas, 56 

 Cyclammina, 57 

 Cyclochaeta, 58 

 Cyclocoelum, 126 

 Cyclophyllidae, 122, 126 

 Cyclops, 207, 213, 222 

 Cydippida, 101, 103 

 Cypridinidae, 215 

 Cypris, 215, 223 

 Cypris stage of Cirripedia, 215 

 Cysticercoid, 120 

 Cysticerciis, 120 

 Cystoidea, 179, 182 

 Cytopharynx, 22, 31 

 Cytoplasm, 20, 22 



regional differentiation of, 50 

 Cytopyge, 22, 50 

 Cytostome, 22, 50 



D 



Dactylogyrus, 113, 125 

 Dactylozooids, 93, 94 

 Daddy-long-legs, 230 

 Dalmanites, 208 

 Daphnia, 211, 222 

 Darwin, 253 

 Datames, 234 

 Davainea, 122, 126 

 Decapoda, 200, 201, 207, 223 

 Deiopea, 103 

 Delamination, 16 

 Delsman, 260 

 Demospongia, 87 

 Dendraster, 182 

 Dendrocoelum, 125 

 Dendrites, 66 

 Dendrosoma, 54 

 Dentalium, 201 

 Dermacentor, 234 

 Dermaptera, 251 

 Dermasterias, 182 

 Dermomuscular sac, 77 

 Dero, 157 

 Desor's larva, 124 

 Determinate cleavage, 15 

 Deutomerite, 43 

 Deutoplasm, 9, 14 



Devilfishes, 197, 200 



Diaptomus, 222 



Dil)ranchia, 199, 200, 201 



Dictydium, 57 



Dicyemidae, 60 



Didinium, 24, 57 



Differentiation, histological, 20, 60 



Difflugia, 41, 57 



Digenea, 112, 113, 125 



Digenetic trematodes, 113 



Digestion, 69 



Digestive parenchyma, 110 



Digestive system, 69 



Digononta, 143 



Dileptus, 57 



Dimorpha, 56 



Dimorphism, 94, 149 



Dina, 158 



Dinenympha, 56 



Dinobothrium, 126 



Dinobryon, 56 



Dinoflagellata, 33, 56 



Dinophilus, 156 



Dioctophyme, 136 



Dioecious, 75 



Diphyllobothrium, 126 



Diplobothrium, 113 



Diplocardia, 153, 157 



Diplodinium, 21, 57 



Diplodiscus, 126 



Diploid, 12 



Diplopoda, 205, 232, 233, 234 



Diptera, 251 



Dipylidium, 121, 122, 126 



Directives, 98 



Disc, 169 



Discina, 162, 164 



Discoidal cleavage, 199 



Discomedusae, 102 



Distomata, 126 



Distyla, 143 



Diurella, 143 



Divaricator muscles, 162 



Docoglossa, 196 



Doflein, 29 



Dondersia, 201 



Dorsal vessel, 204 



Dorylaimus, 133 



Driesch, Hans, 167 



