INDEX 



Numbers in Italics give Systematic Position. Numbers in Black Type 

 refer to Figures 



Amph. = Amphineura 

 Ast. = Asteroidea 

 Blast. = Blastoidea 

 Grin. =Crinoidea 

 Cyst. = Cystidea 

 Echin. = Echinodermata 

 Echinoid. = Echinoidea 



Ent. = Enteropneusta 

 Gastr. = Gastropoda 

 Hoi. = Holotliurioidea 

 Lam. = Lamellibrancliia 

 Moll. = MoUusca 

 Oph. = Ophiuroidea 



Abatus cavernosits, apical system, 324 

 Abrarwhia, 1-2 

 Acanthaster, S99 



,, ecJuTiaster, 421 



„ Ellisii, 421 



Acanthochiton^ 165 

 Acanthodoris, 13 

 Acanthology, 387 



Acanthotrochus mi rahilis^ ""wheel," 337 

 Acephala, 14, 177 

 Accra, 10 

 Aceste, '293 



Acetabula (Moll.), 117 ; (Echinoid.), 390 

 Adculidce, 6 

 Acmaea ( = Tectura), 5 

 Acmaeidos, 5 

 Aarocidaris, 290 

 Acrocrinid(e, 308 

 Acrocrinus, 309 

 Actceon, 110 

 ActcBonidie, 10 

 ActinocHnidce, 307 

 Actinocrinus, 307 



,, proboscidalis, apical system, 



329 



,, verneuilianus, 423 



Actinocucumis, 338 



Actinmmtnc, 313; food grooves, diagr., 

 366 



,, strata, 365 



Actinopoda, S85 ; oral region, section, 428 

 Adambulacral ossicles, 352 ; radii, 316 

 Adctes, 293 

 Adradii, 316 



^olidia, 13 



jErilidiadcc, 13 



JEolis, alimentary canal, 192 



,, rvjibranchialis, 12 

 Mrope, 293 

 ^Esthetes, 166 

 Jltheria, 62 

 Agaricocrinus, 307 

 Agassizia, 293 

 Agassizocrinus, 30Jf. 

 Agelacrinvs, 313 



„ cincinnatcnsis, 313 



Aglossa, 14, 177 

 Avuclia, 76 

 Ambitus, 338 

 Amhlypygus, 345 

 Ambulacra, 339 

 Ambulacral brush (Echinoid. ), 433 ; gills 



(Echinoid.), 433 ; ossicles, 352 ; radii, 

 316 

 Ammonitidca, 22 

 Amnion, 623 



Amcebocytes (Moll.) 200 ; (Echin.), 415 

 Amphiaster, 297 

 Amphidrovius, 160 

 Amphineura, 2 

 Amphipeplea, 8 



,, leuconensis, 8 



Amphisphyra, 46 

 Amphisternal test, 349 

 Ajuphiii.ra, 300 



„ magellanica, 495 



,, squamMa, apical system, 327 ; 



stone canal, 422 



