43 
vitello-duct. Eggs ovoid, 150 fj. long by 80 // broad. Sporocyst, redia, cercaria, and 
intermediate host undetermined. 
Habitat. — Intestine or (?) gall ducts of man {Homo sapiens); Asia. 
The original description bv Poirier (1887) is not accessible to me. 
Most authors consider this species identical with Fasciolopsis hmhii^ 
but Moniez (1896) has questioned their identity and Odhner’s (1902) 
recent work seems to prove that the two forms are distinct. 
Fig. 67. — Ventral view of Fasciolopsis rathouisi, enlarged to show the anatomy: ac., acetabulum; 
ejc.p., excretory pore; g. p., genital pore; m., mouth with oral sucker; oi\, ovary; g., shell gland; 
t., testicle; w.. uterus; v. g., vitellogene gland; vdt., vitelloduct. (After Poirier, 1SS7 [from Railliet, 
1893, p. 363, fig. 243].) 
GeniTS HETEROPHYES« Cobbold, 1866. 
Gexeeic diagnosis. — Fasciolidae : ^ Body small, contractile neck not very sharply 
defined from body; anterior end more contractile; posterior end more or less bluntly 
rounded, plump, and less motile. Skin thickly beset with scale-like spines, except 
for a small area at aboral pole. Oral sucker without thorns; ventral acetabulum 
situated at the border between the anterior more contractile, and aboral plumper, 
less contractile portion of body, and is considerably larger than oral sucker. Intes- 
« Synonyms. — Heterophyes CobhdVdi, 1866 (probably earlier); Cotylogonimus Liihe, 
1899; Ccenogonimus Looss, 1899. 
^ This generic diagnosis inchides some characters which in reality belong to the 
diagnosis of the subfamily. 
