[142]

Our knowledge of British species is mainly due to M‘Intosh (British Annelids, Ray Society, 4to, 1873) and Riches (Journ. Mar. Biol. Ass. vol. iii. 1893-1895, p. 1).

[143]

Fauna und Flora G. von Neapel, 22 Monogr. 1895.

[144]

See M‘Intosh, British Annelids, Ray Society, 4to, 1873.

[145]

Loc. cit.

[146]

References to these works are given on p. [101].