— sigma, xlii, 99.f
— striatula, xlii, 98.f
— viridis, xlii, 96.f
— viridula, xlii, 97.
—, xlii, 98f, 99.f
Omphalopelta, genus, xlviii, 325.
Pentasterias margaritifera, xli, 290.
Periptera, genus, xlviii, 327.
Podiscus Rogersi, J. W. Bailey, xlvi, 137.f
Podosphenia, xliii, 323.f