Dicladia, characters of genus, xlviii, 204.
Dictyocha aculeata, J. W. Bailey, xlvi, 140.f
— fibula, J. W. Bailey, xlvi, 139.f
— ponticulus, xlviii, 328.f
— quadratum, xlviii, 328.f
Dictyopyxis, genus, xlviii, 326.
Echinella flabellata, xliii, 324.f
—, xliii, 324.f
Euastrum, xli, 293f;