ECHINODERMS. 93 



Class III — Asteroiclea.* 



Class IV. — Echinoidea. 



(1) Pal^chinoidea. CystocidaridiB.* 



Bothriocidaridae.* 



( 2 ) EUECHINOIDEA.* 



Lepidocentridte.* 



Melonitidse — Melonites, Oligoporus. 



Archfeocidaridse — Archceocidaris. 



Class V. — Cystoidea. 



(1) Aporitida. Agelacrinidae — Uchino discus. 



(2) DiPLOPORIDA.* 



(3) Ehombiferi. Camarocystitidse — Caniarocystites. 



Class VI. — Blastoidea. 



( 1 ) Eegulares. Pentremitidse — Pentremites. 



Troostoblastidae — Metablastus. 

 Nucleoblastidse — 



Elceocrinus ScMzohlastus, Gryptoblastus. 

 Granatoblastidse — Granatocrinus. 



Codasteridse — Codaster, Orophocrinus. 



( 2 ) Irreglares.* 



Class VII. — Crinoidea. 



( 1 ) COADUNATA. Eeteocrlnidse.* 



Ehodocrinidse — Bhodocrinus, Oilbertsocrinus. 

 Glyptasterid9B. — Ptychocrinus. 

 Melocrinidae. — Glyptocrinus. 

 Actinocrinidae. — 



Actinocrinus Megistocrinus, Borycrinus. 

 Platycrinidse. — Eucladocrinus, Platyerinus. 

 Hexacrinidse. — DicJiocrinus, Talarocrinus. 

 Acrocrinidse.* 

 Barrandeocrinidse.* 

 Calyptocrinidse.* 

 Crotalocrinidse.* 



