— cuneata, xxxviii, 92.
— flexuosa, xxxviii, 92, 93.f
*— Grayi, xxxviii, 92.
— minor, xli, 347.f
*Gryphæa convexa and mutabilis, xvii, 283.
*— vomer, xvii, 283; xviii, 250.f
*— plicatella, xxiii, 293.
Helix, species of, in Ohio, xxxi, 36.
—, observations on some, xl, 272.
— multidentata, remark on, C. B. Adams, xl, 274.