index: of genera. 



In addition to indexing the Genera in tlie wliole worlc, tlie gender of each genus is 

 designated— m, for masculine ;/, feminine : )i, neuter. -,. i- , . 



PAGE. 



Acambona, /. 103 



Acanthaspis, / 227 



Acantho^ladia, / 289 



Acanthograptus, m. . 262 



Acantholepis, / 227 



Acantholoma 208 



Acanthophyton, n 21 



Aoanthotelson, n 208 



Acervularia, / 46, 262 



Acheloma, n 323 



Acidaspis, / 208, 316 



Aclis : 143, 300 



Aclisina, /. 300 



Acondylacanthus, m227, 319 



Acrocrinus, m 66-279 



Aoj-oouUa 143 



Acrolepis, /. 227 



Acrophyllum, n 46, 262 



Acrotreta, /. 103 



Actinoeeras, re. ^l .. 165, 305 



Actinocrinus, m 66, 279 



Actinodesma, n 180, 309 



Aegilops 103, 294 



Agaricia 46 



Agaricocrinus, m . . .69, 279 



Agassichthys . 227 



Agassizocrinus, m . . .69, 279 



Agassizodus, m 228 



Agelacrinus, m 69, 279 



Aglaspis, / 209, 316 



Agnostus, VI 209, 316 



Agraulos, m 209, 316 



Alecto 95, 289 



Alethopteris, /. 21, 248 



Allagecrinus, m. ... .279 

 Alloprosallocrinus, m 70, 279 



Allorisma, n 180, 309 



Alveolites, m 46, 262 



Amacanthus, m 228, 319 



Amblypterus, m 228 



Ambocoelia, f. 103 



Ambonyohia", / 181, 309 



Ammonites . . .>rl 305 



Ampheristocrinus, m.. . .279 



Amphibamus, m 240 



Amphicoelia, /. 181 



Amphigenia, / 104 



Amphion, m 209 



Ainphipeltis, / 209, 316 



Amphoracrinus, m.. .70, 279 

 Amplexopora, /. 289 



PAGE. 



Amplexus, m . . .46, 243, 262 



Ampullaria. 143 



Ampyx, m 209 



Amygdalocystites, m. 70, 279 



Anaclitacanthus, m 228 



Anarthrooanna, } 22 



Anastrophia, /. 104, 294 



Anatina, /. 181, 309 



Anoyrocrinus, m 70 



Aneimites, to 22 



Angellum, m 309 



Anisodexis, m 323 



Anisophyllum, re ... . . 262 



Annularia, /. 22, 248 



Anodontopsis, /. 182 



Anomalocrinus, m. . .70, 279 

 Anomalocystites, m 70, 279 



Anoinalodonta, / 182 



Anomaloides 280 



Anomia 104 



Anomites. . '. 104 



Anomphalus, m 143 



Auopolenus, m 209 



Antholithes, m 22, 248 



Anthophyllum, re. 46 



Anthracerpes, m 224 



Anthracomya, / 182 



Anthraconectes, m 209 



Anthracopalsemon, m.. 210 

 Anthracoptera, /. . , .182, 309 



Anthracopupa, / 300 



Anthracosia, / . . . ; 182 



Antliodiis, to 228 



Apedodus, to 228 



Aphlebia./. 248 



Apiocystites, m 70 



Arabellites, m 313 



Arachnocrinus, TO . .. .. 280 

 Arachnophyllum, n. . . 262 



Araucarites, m 22 



Area...: 182, 309 



Archaeobelus, m 323 



Archaeocaris, / 210 



Archaeocidaris, f 70, 280 



Archseocrinus, m 280 



Archaeopteris,/. ... .22, 248 



Archegogryllus, m 225 



Archaeooyathellus, to... .260 



Arohaeocyathus, m 42 



Archimedes, m 95 



Archimedipora 95 



PAGE. 



Archimylaoris,/ 225, 319 



Architarbus, re 224 



Archiulus, m 224 



Arctinurus 316 



Arenicolites, m 206 



Arges, TO 210, 316 



Anonellus, to 210, 316 



Aristophycus 248 



Arthraria, /. 22 



Arthroclema, n 95, 289 



Arthrolycosa, /. 224 



Arthronema, n 289 



Arthrophycus, n 23 



Arthrostigma, n 23 



Artisia, / 23 



Asaphiscus 210 



Asaphoidichnus, m 316 



Asaphus, m 210, 316 



Ascoceras, re 165 



Ascodiotyon, n 289 



Asolanus 248 



Aspidella, / 141 



Aspidichthys, to 228 



Aspidocrinus, m 71 



Aspidodus, TO 228 



Asplenites, m 23 



Astarte, /. 182 



Astartella, / 182, 309 



Asteracanthus, m 228 



Asterias 71 



Asterocarpus, m 23 



Asterocrinus 71 



Asterophycus, n 23, 248 



Asterophyllifces, m. . .28, 248 



Asteropteris, / 248 



Asteroptychius, to. .228, 320 



Asterosteus, to 228 



Astrma 46, 262 



Astrseophyllum, n 262 



Astrseospongia, / 42 



AKtrios 71 



Astrocerium, re 47 



Astroconia, n 260 



Astroarinites 71 



Astylospongia, / 42, 260 



Atactopora, / 289 



Atazocrinus 71 



Ateleocystites, m 71 



Athyris, / 104, 294 



Atops,/ 211, 316 



Atrypa,/ 10o,'294 



