Bothriocerca, [226]

Bothrioneuron, [379]

Bothrioplana, [46], [50]

Bothrioplanidae, [42], [46], [50]

Bothromesostoma personatum, [49]

Bourne, on Oligochaeta, [352], [373], [377] n., [380];

on Leeches, [400]

Bouvier, on commensal Gephyrea, [429]

Bowerbankia, [470], [480], [481], [492], [500], [518], [532], [533];

larva, [511], [513];