Ephemera, host of Gordius, [172], [173]

Ephesia, [321]

Epibdella, [55], [73]

Epidermis, of Leptoplana, [11], [12];

of Polyclads, [20], [25], [29];

of Trematodes, [56];

of Cestodes, [85];

of Nemertinea, [102];

of Nematoda, [125];

of Acanthocephala, [175];