Ehrenberg, on Turbellaria, [3], [6];
on Rotifers, [198], [220] n., [228];
on Gastrotricha, [231];
on Polyzoa (Bryozoa), [475]
Eichhorn, on Rotifers, [197]
Eisen, on Oligochaeta, [380], [390]
Eisig, on Capitellidae, [373];
on Bonellia, [443]
Ehrenberg, on Turbellaria, [3], [6];
on Rotifers, [198], [220] n., [228];
on Gastrotricha, [231];
on Polyzoa (Bryozoa), [475]
Eichhorn, on Rotifers, [197]
Eisen, on Oligochaeta, [380], [390]
Eisig, on Capitellidae, [373];
on Bonellia, [443]