608 



COMPARATIVE ANATOMY 



Diffuse liver (Gastr.), 192 

 Digonopora, 8 

 Dimerocrinus, 367 

 Dimyaria, 14, 124 ; shell, 63 

 Diotocardia, 4> 30 

 Dipleurula larva, 546 

 Diplopodia, 290 

 Discodoris, 13 

 Discoidea, 291 

 Distichals (Grin.), 371 

 Docoglossa, 5 

 Dolabella, 10 

 Doliidce, 6 

 Dolium, 102 

 Donacidce, 18 

 Donax, 18 

 Dondersia, 3 



is, 251 

 . 184 

 Dondersiidce, 3 

 Dorididce cryptobranchiata, 13 



,, phanerobranchiata, 13 

 Doridiidce, 10 

 Doridium, 46 

 Doridopsidce, 13 

 Doriopsis, 214 

 Doris, respiratory and circulatory organs, 



98 



Dorocidaris papillata, 388 

 Dorsal axis (Blast.), 331 ; cartilage (Ceph.), 



127 



Dorycrinus, 307 

 Dosidicus, 69 

 Dotonidce, IS v 



Dreissensia pvlwnorpha, gills, 94 

 Dreissensiidce, 17 

 Disaster, 293 

 Dytaster, 296 



ECHINASTER, 299 



,, sepositus, 483 



EchinoMeridce, 299 

 Echinidce, 290 

 JEchinobrissus, 293 

 Echinocardium, 293 



Echinocidaris, 290 



nigra, ambulacrum, 393 



pustulosa, 291 



Echinocotms, 293 

 Echinocorys, 293 

 Echinocrepis, 295 

 Echinocrinus (Archceocidaris), 289 

 Echinocyamus, 291 



,, pusillus, gastrula, 520 ; 



Pluteus larva and young, 

 520-524 ; tentacle, sec- 

 tion, 464 



Echinocystis (Cystocidaris), 289 

 Echinodermata, alimentary canal, 475 ; 

 representatives of principal divisions, 

 316 



293 



Echinodiscus biforis, 424 



Echinoencrinus, 313 



armatus, 333 



Echinoidea, 288-295; endocyclic, 322; 

 exocyclic, 322 ; larva, 509 ; organisa- 

 tion of regular, 419 ; pedicellarise, 

 397 ; Pluteus, 520-524 ; radial region, 

 section, 410 



Echinolampas, 293 



Echinometra, 290 



Echinometridce, 290 



Echinoneidce, 293 



Echinoneus, 293 



Echinopsis, 290 



Echinospatagus, 293 



Echinosphcera, 386 



ISchinothrix, 290 



Echinothuria, 290 



Echinothuridce, 290 



Echinus, 290 ; apical system, 318 ; masti- 

 catory apparatus, 401 

 ,, acutus, 398 



Edrioaster, 387 

 Elceocrinus, 315 

 Elasipoda, 285 

 Eledone, 24 



,, moschata, secondary body cavity, 



diagram, 214 

 Eleutherocrinus, 315 



,, Cassedayi, apical side, 



331 ; oral side, 383 

 Elpidia, 285 



,, glacialis, 467 

 Elpidiidce, 285 

 Elysiadce, 12 



EiYbarginula, 4 > shell, 59, 156 

 Embryonic cone, 257 

 Enallocrinus, 308 

 Encope, 293 



,, Valenciennesi, system of plates, 



346 

 Encrinus, 304 ; axial canals, 378 



,, liliiformis, 304 

 Endoceratidce, 67 



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

 Enoploteuthis, 127 ; musculature, 127 

 Ensis, 19 



Enter opneusta, 561-596 ; branchial region, 

 567, 580 ; larvae, 586-590, 594 ; pro- 

 boscis, section, 583 

 Entocolax Ludwigii, 246, 247 

 EntoconcJia, 183 



, t mirabilis, 247, 248 



Entovalva, 229 

 Eolampas, 293 

 Eolis D-rummondi, 183 

 Epineural canal, 449 

 Epipodial lobes (Ceph.), 38 

 Epipodium, 106 

 Episternum, 349 

 Epistroma, 349 

 Eretmocrinus, 307 



