— striatulus, xxxiv, 218.
Ranella caudata, xxxvi, 388.
*Rostellaria arenarum, xxiii, 292.f
Saxicava, geological changes produced by, in Plymouth Sound, xlii, 326.
*Scalaria annulata, xvii, 281; xviii, 250.f
*— elegans, xl, 95.f
— novangliæ, xxxiv, 218.
— subulata, xxxiv, 218.
*— venusta, xl, 95.f
*Scalites angulatus, xlvii, 359.f