Longitudinal section, of a young Asteroid, [445];

of a young Ophiuroid, [486];

of a Holothuroid, [563];

of Antedon, [584];

of free-swimming larva of Antedon, [618]

Lophocalyx philippensis, [229]

Lophoctenia, [418]

Lophohelia, [399];

L. prolifera, [399]

Lophomonas, [111], [123]