608 



COMPA RA TIVE ANA TOMY 



Diffuse liver (Gastr.), 192 

 Bigo7iopora, S 

 Dimerocrinus, 367 

 Dimyaria, 14, 124 ; shell, 63 

 Diotocardia, 4, 30 

 Dipleurula larva, 546 

 Diplopodia, 290 

 Discodoris, 13 

 Discoidea, 291 

 Disticlials (Crin.), 371 

 Docoglossa, 5 

 Dolabella, 10 

 Doliidce, 6 

 Dolium, 102 

 Donacidce, 18 

 Donax, 18 

 Dondersia, 3 



,, batyulensis, 251 



,, flavens, 184 



Dander siidce, 3 

 iJorididce cryptohranchiata, 13 



,, phanerubranchiata, 13 

 Doridiidoe, 10 

 Doridium, 46 

 Doridopsidw, 13 

 Doriopsis, 214 

 Doris, respiratory and circulatory organs, 



98 

 Dm-ocidaris papillata, 388 

 Dorsal axis (Blast), 331 ; cartilage (Cei^h.), 



127 

 Dorycrinus, 307 

 Dosidicus, 69 

 Dotonidce, 13 



Dreissensia polyriwrpha, gills, 94 

 Dreissensiidce, 17 

 Dysaster, 293 

 Dytaster, 296 



ECHINASTER, 299 



,, sepositus, 483 



Echino.steridce, 299 

 Echinidce, 290 

 Echinobrissus, 293 

 Echinocardium, 293 



„ fluvcscens, 398 



Echinocidaris, 290 



„ nigra, ambiilacrum, 393 



,, pustulosa, 291 



Echinoconus, 293 

 Echinocorys, 293 

 Echinocrepis, 295 

 Echinocrinus {Archceocidaris), 289 

 Echinocyamus, 291 



,, piusiUus, gastrula, 520 ; 



Pluteus larva and young, 

 520-524 ; tentacle, sec- 

 tion, 464 

 Echinocystis (Cystocidaris), 289 

 Echinodermata, alimentary canal, 475 ; 

 representatives of principal divisions, 

 316 

 EchinodiscUs, 293 



Echinodiscus biforis, 424 



Echinoencrinus, 313 



„ armatus, 333 



Echinoklea, 288-295 ; endocyclic, 322; 

 exocyclic, 322 ; larva, 509 ; organisa- 

 tion of regular, 419 ; pedicellarise, 

 397 ; Pluteus, 520-524 ; radial region, 

 section, 410 



Echinolampas, 293 



Echhinmdni, 290 



Echi,loi,„irid,r^ 290 

 Efhuiuncldu., 293 

 Echinoneus, 293 

 Echinopsis, 290 

 Echinospatagus, 293 

 Echinosphmra, 386 

 Edihiofliri.r, 290 

 Echinullmrl.i, 290 

 Ecliuwtlcurukc, 290 



Echinus, 290 ; apical system, 318 ; masti- 

 catory apparatus, 401 



,, acutus, 398 



,, nielo, 398 

 Edrioaster, 387 

 Elceocrinus, 315 

 Elasipoda, 285 

 Eledone, 24 



,, moschata, secondary body cavity, 

 diagram, 214 

 Eleutlierocrinus, 315 



,, Cassedayi, apical side, 



331 ; oral side, 383 

 Elpidia, 285 



,, glacialis, 467 

 Elpidiidce, 285 

 Elysiadve, 12 



Emarginula, 4 '> sliell, 59, 156 

 Embryonic cone, 257 

 Enallocrinus, 308 

 Encope, 293 



,, Valenciennesi, system of plates, 

 346 

 Encrinus, 304 > axial canals, 378 



,, liliiformis, 304 



Endoce rat idee, 67 



Endogastric coil (Gastr.), 67, 68, 159 

 Knoplotcuthis, 127 ; musculature, 127 

 Ensis, 19 



Enicropnu'iista, 561-596; branchial region, 

 567, 580 ; larva:-, 586-590, 594 ; pro- 

 boscis, section, 583 

 Entocolax Ludwigii, 246, 247 

 Entoconcha, 183 



,, mirabilis, 247, 248 



Entovalva, 229 

 Eolampas, 293 

 Eolis Drummondi, 183 

 Epineural canal, 449 

 Epipodial lobes (Ceph.), 38 

 Epipodium, 106 

 Episternum, 349 

 Epistroma, 349 

 Eretiiiocrinus, 307 



