INDEX TO THE PORIFERA 



171 



Cnemuliastrum, 150 

 Coelocorypha, 150 

 Coeloptychidue, 124 

 Coeloptych i u m, 1 2 4 

 Coelosci/pkia, 125 

 "collar, 27, 54, 55, 121 



— cells, 27, 53, 121 

 collenchyma, 52 

 colleucytes, 52, 62, 120 

 Collinelhu 148 

 colliiin, 54 



colony, modifications of, in 



sponges, 5, 16 

 Colospiingia, 111 

 colours of sponges, 24 

 Cometella, 151 

 comitalia, 119 

 connecting fibres, 141 

 connective tissue, 51, 81 

 Conocoelia, 111 

 consistence of sponges, 26 

 contractile cells, 44 



— vacuoles in collar cells, 

 54 



contractility, 4, 29, 30, 87 

 conuli, 141 

 Coppatias, 150 

 Coppatiidae, diagnosis and 



genera, 150 

 Corallistes, 149 

 Corallistidae, 148, 150 



— diagnosis and genera, 

 149 



C'ornacuspongiae, 78, 146, 



163 

 Cornuhtm, 152 

 cortex, 32, 97, 105, 129, 



136, 162 

 cortical skeleton, 105 

 Corticella, 147 

 Corticidae, 134 



— diagnosis and genera, 

 147 



Corticium, 147 

 Corynella, 111 

 Coscinodenna, 153 

 Coscinopura, 124 

 Coscviuqmridae, diagnosis 



and genera, 124 

 Cranidla, 67, 147 

 Crateromoipha, 122 

 Craticidaria, 124 

 crepis, 134, 162 

 Crispispiiiifjm, 111 

 Crustacea in sponges, 88 

 cuticle, 42, 44 

 cuticular secretion of 



spongin, 141 



— secretions, 41, 43 

 cuttings, propagation of 



sponges by, 64 



Cyat/wp/ii/cus, 123 

 Cydoniuiii, 148 

 Cylindrophyina, 149 

 Cy pell id, 124 

 Cyrtaulon, 124 

 cysteuchynie, 52 

 cystencytes, 52, 62 

 Cystispongia, 124 

 cytoplasm of collar cells, 

 54 



Dactylocahjx, 124 

 Daedalopelta, 149 

 DamiricL, 151 

 Darwinella, 43, 140, 141, 



154, 164 

 deep sea, influence of life 



in, 23 

 Delage, 49, 82, 158, 159 

 Demospongiae, 1, 24, 26, 



37, 40, 46, 47, 52, 78, 91, 



125-154, 156, 157, 161- 



164 



— canal system, 125-130 



— classitication, 146-154 



— embryology, 78-81 



— phylogeny, 161-164 



— skeleton, "130-144 

 Dendoricinae, diagnosis and 



genera, 152 

 Dendoryx, 152 

 Dcndrilla, 141, 154 

 dendritic sponges, 22 



— type of skeleton, 141, 

 164 



Dendroceratina, 1, 78, 145, 

 146, 153, 163 



— diagnosis and classifica- 

 tion, 154 



DcndrodoncUa, 149 



/Jcndropsis, 153 



Deudy, 76 (footnote), 110, 



157 

 Dendya, 94 

 Dercitns, 147 

 dermal epithelium, 27, 42, 



43, 81 



— layer, 27, 84 



— membrane, 97, 112, 120, 

 127 



— pores, 127 

 dermalia, 118 

 desma, 41, 62, 134 

 Desmacel/u, 152 

 Desmacidon, 152 

 Desmacidonidoe, 152 

 flesmacytes, 52, 62 

 Desmanthidae, 148 



— diagnosis and genera, 

 149 



Desmanthns, 149 



14 



Deszi), 67 

 diactinal, 38, 116 



— spicules, 137 

 diaene, 133 

 Dialytina, 109, 111 



— diagnosis and genera, 

 110 



diapedesis, 69 

 l>iapkctia. 111 

 dichotiiaene, 134 

 Uictyocaly.r, 122 

 Dictyoceratina, 1, 46, 80, 

 140, 146, 163 



— diagnosis and classifica- 

 tion, 153 



dictyonalia, 119 

 Didyonella, 153 

 Dictyonina, 1, 8, 119, 121 

 (footnote), 156, 157 



— diagnosis and classifica- 

 tion, 123-125 



Dictyophyton, 123 

 Dictyospongidae, 123 

 digestion, 86 

 dilophous, 134 

 diplodal type of canal 



system, 35, 130 

 Diplodidyum, 124 

 J)irrhopa/um, 152 

 discoctasters, 120 

 Discodcrmia, 148 

 discohexactine, 117 

 discohexaster, 117 

 iJiscostriiiiui, 150 

 distribution, SQ 

 Disyrimia, 3, 13, 36, 125, 



148 

 Ditriaenella, 147 

 diverticula, 7, 32, 90, 93, 



96, 104 

 division of collar cells, 56 

 Dobie, 56, 158 

 Dorydesmia, 149 

 Dorypleres, 150 

 Dotona, 151 

 Dragmastra, 148 

 Dujardin, 89, 158 



Ebner, 101 



echinating spicules. 140 

 Ediinodathria, 152 

 Ediinodidyum, 152 

 Kchinonema, 152 

 Ecioncma, 148 

 ectochoue, 129 

 ectoderm, 81, 82, 158, 



159 

 ectosome, 128 

 Edyoniitac, 156 

 — diagnosis and geuer.a, 



152 



