of Rhizocrinus, [591];

of Bathycrinus, [591];

of Pentacrinidae, [592];

of Holopus, [594];

of Eudiocrinus, [594];

of Inadunata, [595];

of Articulata, [595];

of Camerata, [595];

development of, in Asterina gibbosa, [611];

in Antedon rosacea, [620]