ALPHABETICAL LIST OF GENERA. 



1439 



Page. 



Stenaster 1411 



Stenopora 1416 



Stenotheea 1421 



Stepbanella 1407 



Stephanocrinus 1413 



Stictopora 1116 



Stictoporella 1416 



Stictotrypa 1416 



Stigniatella 1415 



Stomatopora 1415 



Straparollina 1421 



Straparollus 1421 



Streptaster 1412 



Streptelasma 1408 



Streptis 1418 



Streptoceras 1423 



Streptoniytilus 1419 



Streptosolen 1407 



Streptospongia 1407 



Streptotrochus 1421 



Strepula 1425 



Striatopora 1409 



Stribalocystit.es 1411 



Stricklandinia 1418 



Stromatocorium 1409 



Stromatopora 1409 



Stromatoporella 1409 



Stromatotrypa 1416 



Strombodes 1408 



Stropheodonla (subgenus Brachy- 



prion) 1418 



Strophograptus 1410 



Stro])homena 1418 



Slmpbonolla (subgenus Stropho- 



prion) 1418 



Stropboprion 1418 



Strophostylus 1421 



Strotospongia 1407 



Stylaraa 1409 



Styliola 1422 



Stylodictyon I W9 



Stylonuru.s (subgenera Ctenopte- 



rus and Drepanopterus) 1426 



Subulites 1421 



Suecoceras 1422 



Symphysurus 1424 



Synbathocrinua 1423 



Syndyograplus 1410 



Synbomalonotus 1425 



Syntropbia 1418 



Syringolites 1407 



Syringopora (subgenus Drymo- 



pora) 1409 



Page. 



Syringostroma 1409 



Taeniaster 1414 



Ta-niodietya l 1 ] f ; 



Tanaocrinus 1413 



Tarpbyceras 1422 



Technophorus L425 



Teganium 1408 



Telephus | 125 



Temnocrinus 1413 



Temnograptus 14ft) 



Tentaculites 1422 



Teratichnus 1411 



Tetracystis nil 



Tetradella 1425 



Tetradium L409 



Tetragrapt us 1-4 10 



Tetranota 1421 



Thalamocriuus 1414 



Thaleops 1424 



Thamniscus L416 



Thamnograpl us 1410 



Thecia 1409 



Tblipsura I 125 



Tbysanopyge 1425 



Tolmaia 111!) 



Trachomatichnus 1 1 1 1 



Trachyum 1407 



Tremanotus L42] 



Trematis 1117 



Trematocystia 1411 



Trematopora 1416 



Trematospira L419 



Tretaspis 1 124 



Triarthrus I 124 



Trichophycus L427 



Trichospongia 1 108 



Trigonodicl ya L416 



Trigonograptus 14 10 



Trigyra L420 



Trimerella L417 



Trimeroceras I 123 



Trimerocystifl nil 



Trimerus 1 125 



Trinucleus 1 124 



Triplecia L428 



Tripleuroceras 1 123 



Tripteroceras 1 123 



Trochoceraa 1 122 



Trocholitefl > '-"- 



Trocholitoceras L422 



Trochonema (subgenus Eunema). . 1 121 



Troostocrinus L412 



Tryblidium 1420 



