The Cambridge natural history, Vol. 01 (of 10)

by Marcus Hartog; Sydney J. Hickson; E. W. MacBride; Igerna Brünhilda Johnson Sollas

of Diatomaceae, [84];

gelatinous, of Volvox, [126];

—see also Shell, Test, Theca

—of Asterias rubens, [434] f.;

of disc of Ophiuroidea, [493];

internal, of Echinarachnius parma, [545], [548];

of Clypeastroidea, [548];

of Laganum, [548];

of Clypeaster, [548];

of Echinocyamus, [548];