of Magelona, [252], [325];

of Sabelliformia, [252], [337]

Blood-corpuscles, in Chaetopoda, [252]

Body-cavity (including Coelom), of Nematoda, [130];

of Gordius, [166];

of Acanthocephala, [175], [178];

of Chaetognatha, [187];

of Archiannelids, [243], [244];

of Polychaeta, [249];

of Myzostoma, [343];