Müller, F., on Triclads, [37];

on Polyzoa, [493]

Müller, O. F., on Turbellaria, [6];

on Rotifers, [197];

on Oligochaeta, [348], [352]

Müller's larva, [16], [28], [29]

Muscles, of Leptoplana, [12];

of intestine in Polyclads, [24];

of Nemertinea, [102], [103];

of Nematoda, [128];