Crinoid Studies. Part III Apographiocrinus arcuatus, new species from the Missouri Series of Oklahoma. Part IV Exocrinus, new genus from the Pennyslvanian of Oklahoma. Part V Allosocrinus, a new crinoid genus from the Pennsylvanian of Oklahoma. Part VI A Bulletin of American Paleontology Ithaca, 32 1949: pp. 255-294. Ci [Zoological Record Volume 87]