638 



INDEX 



Digestion, 9, 15 f. ; of reserves in brooJ- 

 formation, 33 ; in Gardiesium, 147 ; in 

 Starfish, 440 



Digestive system — see Alimentary Canal 



DUeptus, 137, 152 n. 



Dill, on Ohlamydovionas, etc., 119 n. 



Dimorplm, 70, 73, 75 n., 112 



Dimorphism of chambered Foraminifera, 

 67 f. 



Dinanweba, 51 ; test of, 53 



Dinenympha, 111, 115 ; undulating mem- 

 branes of, 123 



DiTwbryon, 110, 112 



Dinoflagellata, 110, 113, 130, 131, 132 ; 

 plastids of, 40 ; nutrition of, 113 



Dinoflagellate condition oiyonng Nootiluca, 

 134 



Uiphyes, 303, S07 



Diphyidae, S06 



Diphyopsinae, 307 



Diplacanthid, 457 



Dipleurula, definition, 605 ; forms of, 605- 

 608 



Dlplocyathus, 277 



Diplodal, 210 



Diplodeniia, 223 



Diploepora, 3^6 



Di2}lograptus, 281, 8S^ 



Diplomila, 111 



Diplopore, 597, 599 



Diploporita, 59S, 599 



Diprionidae, Z8'2 



Directives, 367 



Disc, of Vorticellidae, 155, 158 ; of Ophio- 

 thrixfragilis, 484 



Discalia, 309 



Discohexaster, 200 



Discoidea, 77 



Discoidea, 558 



Discomedusae { = Ephyropsidae, 322 + Atol- 

 lidae, 322 4- Discophora, 323) 



Discomorpha, 137 



Disoooctaster, 200 



Discophora, 310, 316, 333 f. 



Uiscorbina, 59, 63; reproduction of, 69 



Discosomatidae, 3S3 



Diseases, produced by Coccidiidae, 102; 

 by Aoystosporidae, 103 f. ; by Flagel- 

 lates, 119 f. ; by Trypanosomes, 119 f. ; 

 Protozoic organisms of, 43 f. 



Dissepiments, 385, 387 



Dissogony, 419 



Distichopora, 284, SS6 



Distomatidae, 110 



Distribution of Protozoa, 47 ; of Sponges, 



in space, 239 f. ; in time, 241 

 Disyriifuja dissimilis, 209, 214, 215 

 Diverticulum — see Caecum 

 Division, binary, 10 ; reduction-, 75 n. 

 Dixon and Hartog on pepsin in Pelomyxa, 



16 

 Dobie, 167 



Doederlein, 193 n. 



Doflein, 46 ; on parasitic and morbific 



Protozoa, 94 n. ; on syngamy of Cysto- 



flagellates, 135 

 Dohrn, on carnivorous habits of Sphaer- 



echinus, 516 

 Dolichosporidia ( = Sarcosporidiaceae), 98, 



108 

 Doramasia, 306 ; D. picta, 303 

 Doratctspis, 78 ; skeleton, 80 

 Dorocidaris — see Gidaris 

 Dorsal elastic ligament of Antedon rosacea, 



587 

 Dorso - central plate of Echinarachnius 



pariiia, 543 

 Dourine, disease of horses and dogs, 119 

 Drepanidium {= LanhesUrdla), 97, 102 

 Dreyer, on genera and species of Radio- 



laria, 87 f. ; on skeleton of Radiolaria, 



82 u. 

 Dropsy, ascitic, associated with Leydenia, 



Drysdale and Dallinger, on organisms of 

 pntrefaction, 44 f., 116 f. 



Dual force of dividing cell, 26 f. 



Duboscq, Leger and, sexual process in 

 Sarcocystis tenella, 108 n. 



Duerden, 261, 369 n., 371, 373, 374, 389, 

 397 n., 400 n., 403, 405, 406 



Dujardin, on sarcode (= protoplasm), 3; 

 on Protozoa, 45 ; on true nature of Fora- 

 minifera, 62 f. ; on Sponges, 167 



Dust, containing cysts of Protozoa, 47 ; of 

 Flagellata, 118 



Dysentery, in Swiss cattle, caused by 

 Coocidimn, 102 ; tropical, caused by 

 Ainoeba coli, 57 



Dysteria, 137, 153 ; oral apparatus, 145 ; 

 shell, 141 



Earthworm, Monocystis parasitic in, 95 



Echinanthidae, 549 



Echinarachnius, 548, 549 ; E. parma, 

 542 f., 543, 5ii, 545, 547 ; shape, 542 

 sphaeridia, 545 ; internal skeleton, 545 

 habits, 546 ; alimentary canal, 646 

 Aristotle's lantern, 546 ; tube-feet, 547 



Echinaster, 439, 4(>^ 



Echinasteridae, 455, 458, 46S 



Echinating, 217 



Echinidae, 639, 558 



Echininae, 539 



Echinocardium, 549 ; E. cordatum, 549 f., 

 551, 552 ; habitat, 549 ; shape, 550 ; 

 spines, 550 ; sphaeridia, 561 ; ali- 

 mentary canal, 551 ; tube-feet, 551 ; 

 habits, 552 ; stone - canal, 552 ; E. 

 flavescens, 556 ; E. pennatifidwin, 555 



Echinoconidae, 658 



Echinocyamus, 648, 549 ; E. pusillus, 549 



Echinocystites, 557 



Echinodermata, 425 f. 



