A monograph of the British annelids. Vol. II-Part I. Polychaeta. Nephthydidae to Syllidae
McIntosh, W.C. (1908). A monograph of the British annelids. Vol. II-Part I. Polychaeta. Nephthydidae to Syllidae. Printed for the Ray Society: London. 232, plates XLIII-L and LVII-LXX pp.
