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

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

of Oligochaeta, [354];

of Leeches, [395];

of Gephyrea, [417];

of Phoronis, [457]

Septum, of Archiannelida, [244];

of Nereis, [249], [251];

of Polychaeta, [269];

of Chlorhaemidae, [334];

of Oligochaeta, [355];

of Gephyrea, [440]