retarded, [31] f.
Brood-mother-cell, [31]
Brood-pouch, of Pteraster, [465], [466];
of Hemiaster philippi, [556], [602];
of Anochanus, [554];
of Cucumaria laevigata, [602];
of Psolus ephippifer, [602]
Brooks, [288], [290], [308] n.
Brown colour of lakes or ponds often due to Dinoflagellates, [131]