of Phoronis, [453];
Ciliated, lappets, of Pterosyllis, [273] n.;
pits, of Polygordius, [244];
pits (= nuchal organs), of Polychaeta, [272] f.;
organs, of Capitelliformia, [305]
Cingulum, in Rotifers, [202]
gill, [265];
tentacular filaments, [304] n.
of Phoronis, [453];
Ciliated, lappets, of Pterosyllis, [273] n.;
pits, of Polygordius, [244];
pits (= nuchal organs), of Polychaeta, [272] f.;
organs, of Capitelliformia, [305]
Cingulum, in Rotifers, [202]
gill, [265];
tentacular filaments, [304] n.