Crinoidea, general remarks on the characters and geological position of, J. Hall, xlv, 349.
Cristatella mirabilis, remarks on, J. G. Dalyell, xxviii, 78.
*Cyathocrinites pyriformis, xlviii, 314.f
*Echinus, xvii, 287; xviii, 250.f
*— infulatus, xxiv, 131.f
*Encrinite, ii, 35.
*—, from near Cincinnati, J. G. Anthony, xxxv, 359.f
*Favosites lycoperdon, xlvii, 363.f
*— striata, i, 384.
*Graptolithes dentatus, xlvii, 370.f