604 



COMPARATIVE ANATOMY 



161 



e, 300 



.-,-, 307 



Ampullae, madreporic, 420 

 ,, tentacle, 430 

 100 

 (Lanistes), Boltemana, shell. 



161 

 (Ceratodes), chiquitensis, 161 



, 161 

 i, 161 



purpvrea, 161 

 (Ceratodes), /w,/ 

 Swainsoni, 161 



r, 6 



A nanch t/tida , 293 

 Anapta, 466 

 Anaspidce, 10 



A a" fin", 21 

 Anatinidce, .'! 

 Anchylosis (Crin.), 378 

 Ancitlct, 13 

 Ancyloceras stage, 68 

 Ancylus, S 

 A nkyrodi rum, 287 

 Annulus, 126 

 Anochanus, 503 



AiU'iti'iiti.i, J? ; circulation, 207; gills, 

 95 ; larva. 264; section, 221 

 ,, cyijnua, 34 



Aiio'niia, lo ; shell, 63 

 Aiimiiiidce, 14 

 Antednn, 313 ; embryo and larva, 510, 



534-543 



Aiiteduit in cisa, '312 ; larva, apical system, 

 318 



,, phalanyium, young stage. 375 



,, rosan-nx, 378 



,, tuberculosa, 297 

 Antedonidte, 373 



Antheneidce, 296 

 Antispadix, 116 

 Aorta, 198, 202 

 Apetala, 293 



e, 310 



.t, 3 



Aplustridce, 110 



AjJ>f*i", 10, 78 ; nervous system, 140 

 Aplysidla, 181 

 Aplysiidce, 10 



Apophyses (Chiton), 39 ; (Echin.), 350 

 Aptychi (Ceph.), 71 

 A fi <-li a i n'des, 293 

 Arbacia, 290, 291 

 A i-baciidoe, 290 

 .1 i-f'i, 15 



,, barbata, eye, 175 



,, Xoce, 206 

 Archosociititi-ii/ir. 289 

 Ari-!i<> ocidaris ( = Echiiwcrinus), 289 

 ArcMster, 296 

 Archastt ridce, 296 



'i". 295 

 is, 13 

 Architcenioglossa, 5 

 Arcidce, 1-5 



Arcus (Echinoid. ), 400 

 Argeutea (Ceph.), 197 

 Ai'!/<ni"i'f", .'4- 24 ; gonads, female, 230 ; 



nervous system, 148 

 ''/", male, 243 



Arion, S 



ater, 9 

 A /-i"/i//"iita, 8 

 .1 ristocystis, 313 

 Aristotle, lantern of, 400-403 

 Artieulamentum, 39 

 Ai-ficii'o.ta, 309 

 Ascocystls, 313 

 Ascoylossa, 11 

 Asiphoniata, 44 

 AsperyilliiiH (Brechties), 21. 20 



i/ichitfi'iiii'iii. 66 



Aspidobranchia, ,} 



Aspidochirotce, 285 ; organisation, 477 

 Aspidodiadema, 290 

 A *2) idodio.de i a atii >< , 290 

 Aspidosoma, ."..<' 

 '-, 50 



ti.i, pedicellarise, 395 

 mbens, madreporic plate, 



421 

 ,. pedicellariae, 395 



A.-:f' , . .. ' 



"<-i'ti,-i]ii ita, 506 

 , 506 

 i'.i, 506 

 capensis, 421 



506 

 '-, 421 

 s, 507 

 spirabilis, 503 

 ., sticmitliii. arm, 396 



(Stollasterias), xolseUuta. arm, 



396 



,, teni'lafiiim, 421 

 vv.lgaris, 507 

 Asteriidce, 299 

 Asterina, 297 



,, i/Hibosa, circular canal, etc., 425 : 



ontogeny, 525-531 

 TIV.v", 506 

 Asterinidce, 297 



Asler&idea, 295 - 299 ; alimentary canal, 

 etc., 484; arm, section, 411; optic cushion. 

 section, 468 ; oral skeleton, 352 ; pedi- 

 cellariw, 395 ; stone canal, section. 421 : 

 water vascular system, 463 



Asterofisis, 297 



Asthenosmna, 290 



v. re us, spine, 390 : test, 472 ; 

 viscera, 443 



Axtrochde, 301 



Astroclon, 301 



