The Cambridge natural history, Vol. 02 (of 10)

by Frank E. Beddard; W. B. Benham; F. W. Gamble; Marcus Hartog; Lilian Sheldon

of Diplozoon, [60];

of Schistocephalus, [86]

Vasa efferentia, of Leptoplana, [14], [15];

of Triclads, [38]

Vascular System, of Nemertinea, [106], [107];

of Archiannelida, [244];

of Nereis, [251] f.;

of Polychaeta, [251] f.;

of Cryptocephala, [252];

of Scoleciformia, [252];