608 



COMPARATIVE ANATOMY 



Diffuse liver (Gastr.), 192 

 Lfigutiojjora, S 

 JJiDH'roci'iniis, 367 

 Dii/njaria, 14, 124 ; shell, 63 

 Diotocardia, 4, 30 

 Diphunda larva, 546 

 Diflopodia. 290 

 Discodoris, 13 

 Di^coidea, 291 

 Distiohals (Ci-in.), 371 

 Docoglossa, 5 

 Dolabella, 10 

 Doliidce, 6 

 Dolium, 102 

 Donacida, IS 

 Donax, IS 

 Dondersia, 3 



,, batytdensis, 251 



,, flavetis, 184 



Dondcrsiida'j 3 

 iJorididif cryptohranchicUa, 13 



,, plmTierohranchuita^ 13 

 I)uridiid(e, 10 

 Doridium, 46 

 Dcrridopsidos, 13 

 Doriopsis, 214 

 Doris, respiratory and circulatory organs, 



98 

 Dorocidaris papillata, 388 

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



127 

 Dorycrinus, 307 

 Dosidicus, 69 

 Dotnnidce, 13 



Dreissensia polymarpha, gills, 94 

 DreisseiLsiida', 17 

 Dijsaster, 393 

 Dytast€i\ 296 



EOHINASTER, 390 



,, sepositus, 483 



Echinu^tendie, 299 

 Echinidce, 290 

 Echiiiobrissus, 293 

 Echinocardium, 293 



,, flavescens, 398 



Echinocidaris, 290 



„ nigra, ambulacrum, 393 



,, pusttdosa, 291 



Bchinocmivs, 293 

 Echinocorys, 293 

 Echinocrepis, 295 

 Echinocrinus (Archmocidaris), 2S9 

 Echinocyamus, 291 



,, pusillus, gastrula, 520 ; 



Pluteus larva and young, 

 520-524 ; tentacle, sec- 

 tion, 464 

 Echinocystis [Cystocidaris), 289 

 Ecliinodermata, alimentary canal, 475 ; 

 representatives of principal divisions, 

 316 

 Echinodiscus, 293 



Ecliinodiscus hiforis, 424 

 Echinoencrinus, 313 



„ armulus, 333 



Echinoidea, 2SS-$95; endocyclic, 322; 

 exocyclic, 322 ; larva, 509 ; organisa- 

 tion of regular, 419 ; pedicellarise, 

 397 ; Pluteus, 520-524 ; radial region, 

 section, 410 

 Edt inolampas, 293 

 Echinovietra, 290 

 Echinometrido;, 290 

 Echinoneid(B, 293 

 Erhi}ioneus, 393 

 Echinopsis, 290 

 Echinospiatayus, 393 

 Echinosphcera, 386 

 Echinothrix, 390 

 Echinothuria, 290 

 Echinothuridce, 290 



Echinus, 290 ; apical system, 318 ; masti- 

 catory apparatus, 401 

 ., acutus, 398 

 melo, 398 

 Edriuaster, 387 

 Eki:ocrinus, 315 

 Elasipoda, 285 

 Eledone, 24 



,, mosclmta, secondary body cavity, 

 diagram, 214 

 Elcvthcrocrinus, 315 



,, Cassedayi, apical side, 



331 ; oral side, 383 

 Elpidia, 285 



,, glcwialis, 467 

 Elpidiidce, 3S5 

 ElysiadfX, 13 



Eiuarginula, 4\ shell, 59, 156 

 Embryonic cone, 257 

 Enallocrinus, 308 

 Encope, 293 



„ Valenciennesi, system of plates, 

 346 

 Eiicrinus, 304 '■, axial canals, 378 



,, lilii/ormis, 304 



EjidoceratidcE, 67 



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

 EnoploUuthis, 127 ; musculature, 127 

 Ensis, 19 



Enteropnevsta, 561-596; branchial region, 

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

 boscis, section, 583 

 Entocolax Ludioigii, 246, 247 

 Entoconcha, 183 



,, mirabilis, 247, 248 



Entoiialva, 229 

 Eolampas, 293 

 Eolis Drummwndi, 183 

 Epineural canal, 449 

 Epipodial lobes (Ceph.), 38 

 Epipodium, 106 

 Episternum, 349 

 Epistroma, 349 

 Eretmocrinus, 307 



