BIOLOGICAL CLASSIFICATION. 1413 



Family C'ALYPTOCRINID^E Angelin. 

 Callicrinus Angelin, Chicagocrinus Weller, Eucalyptocrinus GoldfuBS. 



Family Batocrinid;e Wachsmuth and Springer. 



Acacocrinus Wachsmuth and Springer, Barrandeocrinus Angelin, Compsocrinus Miller, 

 Habrocrimis Angelin, PeriechocrinusAustin, Saccocrmus Hall, Tanaocrinus Wachs- 

 muth and Springer, Xenocrinus Miller. 



Family Platycrinid;e Rocmer. 



Coccocrinus Midler, Cordylocrinue Angelin, Marsipocrinus Bather, Platycrinus Miller. 



Order Flexibilia. 

 Suborder Sagenocrinoidea. 



Family Lecanocrinid^e Springer. 

 Anisocrinus Angelin, Asaphocrinus Springer, LecanocrinnsIIall, Ormocrinus*Springer, 



Pycnosaceus Angelin. 



Family Sagenocrinid.e Springer. 

 Sagenocrinns Austin, Temnocrinus Springer. 



Family Ichthyocrinid;e Wachsmuth and Springer. 

 Clidochirus Angelin, Iehthyoerinus Conrad. 



Suborder Taxocrinoidea. 



Family Taxocrinid^e Bather. 

 Eutaxocrinus Springer, Gnoriniocrinus Wachsmuth and Springer, rrotaxocrinus 

 Springer. 



Order Inadunata. 

 Suborder Larviformia. 



Family StephanocriniD/E Wachsmuth and Springer. 

 Stephanocrinus Conrad. 



Family Pisocrinid^ Angelin. 

 Pisoerinus Pekoidnck. 



Family HAPLOCKrNn>.ss Roemer. 

 Haplocrinus Steininger. 



Family Synbathocrinid;e Wachsmuth and Springer. 

 Synbathoerinus Phillips. 



Suborder Fistulata. 

 Family Hybocrinioe Zittel. 

 Hybocrinus Billings, Hybocystis Wetherby. 



Family Heterocrinid.e Zittel. 

 Ectenocrinus Miller, Heterocrinue TTall, Iocrinus Hall, Myelodactylus Hall, old. >- 

 crinus Wachsmuth and Springer. 



Family Anomalocrinid.E Wachsmuth and Springer. 

 Anomalocrinus Meek and Worthen, Glaucocrinus Parks. 



Family Cki:m.\< rixid.e Ulrich. 

 Cremacrinus Ulrich, Deltacrinus 1 Irich, I'm heirocrinua Meek and Worthen. 



