372 



INDEX 



Ampyx, 303 

 Amusium, 215 

 Andbacia, 104 

 Anal inter-radial, 139 



,, siphon, 200 

 Ananchytes, 131 

 Anarcestes, 271 

 Anaspides, 323 

 Ancilla, 247 

 Ancillaria, 247 

 Ancyloceras, 279 

 Angelina, 305 

 Angle of divergence, 58 

 Anisopleura, 238 

 Annelida, 158 

 Annulus, 261 

 Anodonta, 218 

 Anomia, 215 

 Anomura, 328 

 Antedon, 145, 146 

 Antenna, 290, 298, 312, 314, 316, 



318, 320, 328, 332, 333 

 Anterior canal, 235 

 Anthozoa, 74-104 

 Anthracodesmus, 333 

 Anthracomarti, 354 

 Anthracomartus, 354 

 Anthracomya, 218 

 Anthracosiro, 354 

 Anthracosia, 218 

 Anthrapalcemon, 325 

 Anti-ambulacral, 108 

 Antipatharia, 77 

 Ants, 337 



Apex (Gasteropoda), 233 

 Aphidae, 336 

 Apical disc, 116 

 Apiocrinus, 144 

 Aporosa, 86, 92 

 Aporrhais, 244 

 Aptera, 334 

 Aptychopsis, 322 

 Aptychus, 268 

 Apus, 302, 312, 313 

 Apygia, 170 

 Arachnida, 337 

 Aragonite, 3-5, 76, 207 

 Araneida, 354 

 Area, 211 

 Arcestes, 273 

 Archceocidaris, 125 

 Archceoniscus, 325 



Archanodon, 230 



Archianellida, 158 



Archidesmus, 333 



Archimedes, 195 



Architarbus , 354 



Arctica, see Gyprina 



Area, 163, 205 



Arenaceous Forarninifera, 17, 22, 



26 

 Areola, 122 

 Arethusina, 311 

 Argonauta, 280, 284 

 Arietites, 275 

 Aristocystis, 147 

 Aristotle's lantern, 124 

 Arms (Asteroidea), 107 



,, (Brachiopoda), 161, 166 



,, (Cephalopoda), 257, 279, 281, 

 283, 284 



„ (Crinoidea), 136, 139 



,, (Ophiuroidea), 112 

 Artemis, 224 

 ArtJirolycosa, 354 

 Arthropleura, 325 

 Arthropoda, 288 

 Arthropomata, 170 

 Arthrostraca = Amphipoda + Iso- 



poda, 325 

 Articulata, 162, 173-184 

 Asaphellus, 306 

 Asaphus, 306 

 Ascoceras, 264 

 Asiphonida, 210 

 Aspidocaris, 323 

 Aspidoceras, 287 

 Aspidosoma, 112 

 Aspidura, 115 

 Astarte, 219 



Asteractinella, 36, 44, 48 

 Aster obi astus, 155 

 Asteroidea, 107-112 

 Asthenosoma, 121 

 Astrceospongia, 36, 44, 47 

 Astroccenia, 104 

 Astropecten, 112 

 Astrorhizse, 71 

 Astylospongia, 42, 47 

 Atelostomata, 129 

 Athyris, 180 

 Atractilites, 284 

 Atractites, 287 

 Atremata, 171 



