Thysanosoma, [91];

generic characters, [90];

T. fimbriata, life-history, [83];

specific characters, [90];

T. giardii, specific characters, [90]

Thysanozoon, [13], [18], [19], [20]

Tomopteridae, [258], [291], [315]

Tomopteris, [315];

colour, [294];

light-producing organ, [296];