94 



BIOLOGICAL KELATIONS. 



(2) Inadunata. Haplocrinidfe* 



Symbathocrinidee. — Symbathocrinus. 



Cupressocrinidse.* 



Gasterocomidte.* 



Hybocrinidse.* 



Heterocrinidse.* 



Anomalocrinidee.* 



Belemnocrinidae — Belemnocrinus. 



Cyathocrinidte. — 



Cyathocrinus, Barycrinus, Lecythiocrinus. 

 Poteriocrinidse. — Poteriocrinus, Zeacrinus^ 

 Uupachycrimis, PMalocrmus, Gromyo- 

 crinus. 

 Encrinidse.* 

 Astylocrinidse. — 



Agassizocrinus, Edriocrinus. 

 Catillocrinidte.* 

 Calceocrinidse. — Calceoerinus. 

 { 3 ) Articulata. Icthyocrinidfe.-^ Icthyocrinus, Taxocrinus, 



Forhesiocrinus, Onychocrinus. 

 Uintacrinidse.* 

 (4) Canaliculata. Pentacrinidi©.* 



Comatulidse.* 



Bourgueticrinidae.* 



Eugeniacrinidse.* 



Holopidfe.* 



Plicatocrinidse.* 



Apiocrinidse.* 



MarsupitidsB.* 



Saccocomidse.* 



Subkingdom V.— VERMES. 

 Class I.— Platyhelmia.* 

 Class II. — Nemathelmia.* 



Class III Rotifera.* 



Class ly Gephyra.* 



