CRIN01DEA. 
Ech. 79 
G. CRINOIDEA. 
Miller (2), after discussing the characters of fossil Crinoids, on which 
their classification should be based, pp. 275-286, adopts the following 
division into families : — 
A. Genera having two basals : — 
Family 1 . Dichocrinidcc : Cotyledonocrinus, Dichocrinus , Talaro - 
crinus. 
Family 2. Plcrotocrinidcc : Ptcrotocrinus. 
Family 3. Acrocrinidcc : Acrocrinus. 
B. Genera having three basals, no subradials, no regular interradials : — 
Family 4. Symbathocrinidcc : Symbathocrinus . 
Family 5. Calceocrmidce : Calceocrinus , Deltacrinus , Halysiocrimis. 
C. Genera having three basals, no subradials, regular interradials : — 
Family G. Actinocrinidcc : Actinocrinus , A lloprosallocrinus, Aga- 
ricocrinu8 i Amplioracrimis ) Bcitocrinits , Dory crinus , 
Eretmocrinus , Gennccocrinus , 3Iegistocrinus, 
Physetocrimis, Saccocrinus , Steganocrinus , Stroto - 
crinus , Teleiocrinus. 
Family 7. Platycrinidcc : Coccocrinus , Cordylocrinus, Euclado- 
crinus, A[acro stylo crinus, Marsupiocrinus, Platy- 
crinus. 
Family 8. Dolatocrinidcc : yl^ocrmws, Dolatocrinus, Hadrocrinus , 
Stereocrinus. 
Family 9. Arthracanthidcc : Arthracantha. 
D. Genera having three basals, subradials, no regular interradials : — 
Family 10. Ichthyocrinidce : Ichthyocrinus, Lecanocrinus , Mespilo- 
crinus. 
Family 11. Ampheristocrinidce \ Ampheristocrinus, Closterocrinus ?. 
E. Genera having three basals, subradials, and regular interradials : — 
Family 12. Taxocrinidcc : Forbesocrinus, Onychocrinus , Tarro- 
crinus. 
F. Genera having four basals, no subradials, regular interradials : — 
Family 13. Eucalyptocrinidce : Eucalyptocrinus, Hypanthocrinus. 
Family 14. Melocrinidce : Compsocrinus, Mariacrinus , Melocrinus, 
Technocrinus. 
Family 15. Xenocrinidcc : Xenocrinus. 
G. Genera having five basals, five subradials, no regular interradials : — 
Family 16. Cyathocrinidcc : Abroiocrinus , Arachnocrinus, Bursa - 
crinus, Carabocrinus, Cyathocrinus, Graphiocrinus , 
Palccocrinus. 
Family 17. Poteriocrinidce : Atelestocrinus, Bary crinus, Cccliocrinus, 
Euspirocrinus, Homocrinus , Hydreionocrinus, Pote- 
riocrinus, Scophiocrinus, Vasocrinus, Zcacrinus. 
