[72]

Braun, in Bronn's Klassen u. Ordn. d. Thierreichs, vol. iv. p. 407, gives a valuable summary of our knowledge of this group. For figures, see van Beneden and Hesse, Mémoires de l'Acad. roy. de Belgique, tom. xxxiv. 1864, pp. 1-169. A valuable paper (with synoptic tables) on Japanese Monogenea, by Goto, Journ. Coll. Sci. Japan, vol. viii. pt. 1, 1894, has recently appeared.

[73]

See Leuckart, "Parasiten" Bd. ii. p. 238.

[74]

Zeller, Zeitschr. f. wiss. Zool. xxii. 1872, pp. 1, 168; also Bd. xxvii. 1876, p. 238; xlvi. 1888, p. 233.

[75]

An excellent and beautifully illustrated account, by Looss, of the Distomatidae of Frogs and Fishes may be found in Leuckart and Chun's Bibliotheca Zoologica, Heft 16, 1894.

[76]

Leuckart, Parasiten d. Menschen, "Trematoden," 1892-94; R. Blanchard, Traité d. Zool. médicale, i. 1889; H. B. Ward, Report for 1894 of Nebraska State Board of Agric. Lincoln, U.S.A. 1895, p. 225.