MacGillivray, on Polyzoa, [519]
M‘Intosh, on Nemertinea, [110] n., [115], [116];
on Phoronis, [454]
Macraspis, [73]
sense-body, [394]
British species, [49]
MacGillivray, on Polyzoa, [519]
M‘Intosh, on Nemertinea, [110] n., [115], [116];
on Phoronis, [454]
Macraspis, [73]
sense-body, [394]
British species, [49]