[42]. Giesbrecht, Mitth. Zool. Stat. Neap. xi., 1895, p. 648.
[43]. Loc. cit. p. 59.
[44]. Claus, Copepodenstudien, 1. Heft, Vienna, 1889.
[45]. Malaquin, Arch. Zool. Exp. (3), ix., 1901, p. 81.
[46]. Canu, Trav. Inst. Zool. Litte. vi., 1892.
[47]. Giesbrecht, Fauna and Flora G. v. Neapel, Monogr. 25, 1899.
[48]. Arb. Zool. Inst. Wien, ii. 1879, p. 268.
[49]. Ibid. xv., 1905, p. 1.
[50]. Heller, Reise der Novara, vol. iii., 1868.
[51]. For fish-parasites in British waters consult Scott, Fishery Board for Scotland, Scientific Investigations, xix., 1900 et seq.