Fifteen to 19 mm. long by 8·5 to 10·5 mm. broad by about 3 mm. thick. Skin with spines (Leiper). Bluntly oval or elliptical with short cephalic cone which is absent in _Fasciolopsis buski_. Oral sucker subterminal, 0·25 to 0·29 mm. broad by 0·2 mm. in antero-posterior diameter. Distant from ventral sucker by about twice its diameter. Ventral sucker 1·32 to 1·38 mm. broad by 0·68 to 0·7 mm. in antero-posterior diameter. Œsophagus extremely short. Cirrus sac not conspicuous and straight as in _Fasciolopsis buski_, but is convoluted. Testes one behind the other (according to Poirier they lie beside one another), more compactly branched, broader and denser than in _Fasciolopsis buski_. Ovary on right side, small, coarsely branched. Uterus in broad, closely grouped coils, packed with ova anterior to ovary. Vitellarian acini more numerous and somewhat differently distributed. Eggs 150 µ by 80 µ, thin shelled. [H. B. Ward, who has examined this species, and from whose account the above is mainly taken, considers that it is a good species, although the differences between it and _Fasciolopsis buski_ are slight, while Odhner, who examined the original species, is of the opposite opinion.--J. W. W. S.] The parasite appears to cause diarrhœa, wasting and occasionally jaundice. _Habitat._--Intestine of man. _Distribution._--China, common in some parts (Goddard). *Fasciolopsis goddardi*, Ward, 1910. Twenty-one to 22 mm. long, 9 mm. broad. Skin with spines (Leiper). Uterus very closely coiled, most striking character is the large size of the vitelline acini. Imperfectly known. _Distribution._--China (Shanghai). *Fasciolopsis fülleborni*, Rodenwaldt, 1909. The fully extended fluke is tongue-shaped, 50 by 14 mm.; two contracted specimens measured 40 by 15 mm. and 30 by 16 mm. respectively. Skin without spines, with according to Leiper cephalic cone not clearly defined. Oral sucker circular, 0·75 mm. in diameter, slightly larger than that of _Fasciolopsis buski_. Ventral sucker 2·6 mm. in diameter (that of _Fasciolopsis buski_ 1·6 to 2 mm.). Length 2·9 mm. (as in _Fasciolopsis rathouisi_), the excess of length over breadth being due to the posterior elongated sac-like prolongation of the sucker. Prepharyngeal sphincter present. Pharynx 0·7 mm. in diameter. Œsophagus practically absent. Gut cæca similar to those of _Fasciolopsis buski_. _Testes_--regularly branched, separated by an incurving of the cæca, the anterior occupying a smaller area than the posterior. _Ovary_--very small, as in _Fasciolopsis buski_, on the right side. _Shell Gland_--almond-shaped, 2·3 by 1·2 mm. In _Fasciolopsis buski_ it is round and smaller, 1 to 1·5 mm. in diameter. _Vitellaria_--similar in distribution to those of _Fasciolopsis buski_, but the acini are strikingly small. [Illustration: FIG. 148.--_Fasciolopsis fülleborni_, ventral aspect. (After Fülleborn.)]