608 



COMPARATIVE ANATOMY 



Diffuse liver (Gastr.), 192 

 Digonopora, 8 

 Dimerocrinus, 367 

 Dimyaria, 14, 124 ; shell, 63 

 Diotocardia, 4, 30 

 Diplei'/'tda larva, 546 

 Diplopodia, 290 

 Discodoris, 13 

 Discoidea, 291 

 Distichals (Crin.), 371 

 Docoglossa, 5 

 Dolabella, 10 

 Doliidce, 6 

 Dolium, 102 

 DonacidcK, 18 

 Donax, 18 

 Dondersia, 3 



,, batyidensis, 251 



,, flavens, 184 

 DondersiidiK, 3 

 Dorididcc cryptobranchiata, 13 



,, phanerobranchiata, 13 

 Doridiidce, 10 

 Doridium, 46 

 Doridopsidce, 13 

 Doriopsis, 214 

 Doris, respiratory aiid circulatory organs, 



98 



Dorocidaris papillata, 388 

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



127 



Dorycrimis, 307 

 Dosidicus, 69 

 Dotonidce, 13 



Dreissensia polymorpha, gills, 94 

 B/'eissensiidce, 17 

 Dysaster, 293 

 Dy taster, '296 



ECHINASTER, 299 



, , sepositus, 483 



Echinasteridce, 299 

 Echinidce, 290 

 Echinobrissus, 293 

 Echinocardium, 293 



ftavescens, 398 



Echinocidaris, 290 



nigra, ambulacrum, 393 



pustulosa, 291 



Echinocumi.s, 293 

 Echinocorys, ,?9.3 

 Echinocrepis, 295 

 Echinocrinus (Archceocidaris), 289 

 Echinocyamus, 291 



,, pusillns, gastrula, 520 ; 



Pluteus larva and young, 

 520-524 ; tentacle, sec- 

 tion, 464 



Ediinocystis (Cystocidaris), 289 

 Echiuodermata, alimentary canal, 475 ; 

 representatives of principal divisions, 

 316 

 Echinodisctts, 293 



Echinodiscus biforis, 424 

 Ech inoencrinus, 313 



armatus, 333 



Echiiifiuh-fi, 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 

 EchinometridcK, 290 

 Echinoneidce, 293 

 Echinoneus, 293 

 Ediinopsis, 290 

 Eckinospatayus, 293 

 JSchinosphcera, 386 

 Echinothrix, 290 

 Echinothuria, 290 

 EchinothuridcK, 290 



Echinus, 290 ; apical system, 318 ; masti- 

 catory apparatus, 401 

 ,, acutus, 398 

 ,, melo, 398 

 Edrioaster, 387 

 Elceocrinus, 315 

 Elasipoda, 285 

 Eledone, 24 



,, moschata, secondary body cavity, 



diagram, 214 

 Eleutlierocrinus, 315 



,, Cassedayi, apical side, 



331 ; oral side, 383 

 Kl/ndm, 2S5 



,, glacialw, 467 

 Elpidiidce, 285 

 Elysiadix, 12 



Emarginula, 4 ', shell, 59, 156 

 Embryonic cone, 257 

 Enallocrinus, 308 

 Encope, 293 



,, Vulenciennesi, system of plates, 



346 

 Eiicrinus, 304 ; axial canals, 378 



,, liliiformis, 304 

 Eitdocemtidai, 67 



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

 Enoploteuthis, 127 ; musculature, 127 

 Ens-is, 19 



Enteropnensta, 561-596 ; branchial region, 

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

 boscis, section, 583 

 Eiitucula.t Lttdwigii, 246, 247 

 Kittoconcha, 183 



,, mirabUis, 247, 248 



Entovalva, 229 

 Knlini-qxis, 293 

 Kl is Driii/iiiKindi, 183 

 Epineural canal, 449 

 Epipodial lobes (Ceph.), 38 

 Epipodium, 106 

 Episteruum, 349 

 Epistroma, 349 

 Eretmocriiius, 307 



