Epimerite of Gregarines, [97], [98] f.

Epineural canal, of Ophiothrix fragilis, [481];

of Echinus esculentus, [515]

Epiphysis, of jaw, of Echinus esculentus, [526];

of jaws of Diadematidae, [531];

absent in Cidaridae and Arbaciidae, [531]

Epiphytic Protozoa, [48]

Epiplasm (= cytoplasm of a brood-mother-cell remaining over unused in brood-formation), [96]

Epistrelophyllum, [403]

Epistylis, [138], [158];