19 
The Giant Liver Fluke— FASCIOLA GIGANTICA« Cobbold, 1856— of Giraffes, 
Cattle, Sheep, Goats, and Man. 
[Figs. 17 to 18.] 
Specific diagnosis. — 
Fasciola: 25 to 75 mm. 
long by 3 to 12 mm. broad, 
flat, oblong, lanceolate; 
anterior end cylindrical, 
attenuate; sides nearly 
parallel for greater part 
of length, especially of the 
anterior half; posterior 
end obtuse. Oral sucker 
1.12 mm. in diameter; 
ventral acetabulum some- 
what larger. Skin with 
spines. Pharynx, — ? — ; 
esophagus extends nearly 
to^cetabulum; intestinal 
ceca more profusely 
branched than in F. hepa- 
tica. Genital pore me- 
dian, about halfway between mouth and 
acetabulum. Male organs: Similar to 
those of F. hejmtica, but the testicles are 
more profusely and delicately branched 
and do not extend so far caudad. Fe- 
male organs: In general similar to those 
of F. hepaticg, but more profusely and 
delicately branched. Fggs, 150 to 190 
u long by 75 to 90 p broad. Sporocyst, 
redia, cercaria and intermediate host 
undetermined. 
Habitat. — Liver of giraffe {Giraffa 
Camelopardalis), cattle {Bos tauriis), zebu 
{Bos iiidicus), liuffalo {Bos hubalis), 
sheep {Ovis aries), goats {Capra hircus), 
in Africa. One case reported for lungs 
of man {Homo sapiens). 
» Vernacular names. — The giant liver 
fluke; the narrow liver fluke; the Egyp- 
tian liver fluke. 
SvNONWMS. — Fasciola gigantica Cob- 
bold, 1856; Bistomum giganteum Dies- 
ing, 1858; Distoma hepaticum (in part) 
of Gervais& van Beneden, 1859; Fasciola 
giganiea {Diesing) Cobbold, 1858; Clado- 
ccelium giganteum (Diesing) Stossich, 
1892, in part; Fasciola hepatica angusta 
Pailliet, 1895; Fasciola hejxdica ceggp- 
tiaca Looss, 1896; Fasciola angusta. 
Bibliography. — For bibliography 
and technical discussion, see Stiles (1895, 
pp. 139-143) ; Looss (1902, pp. 782-783). 
Fig. 17.— The 
Giant • Liver 
Fluke {Fasci- 
ola gigantica 
[F'. hepatica 
pcggptiaca]), 
drawn from 
one of Looss’s 
specimens, 
natural size. 
(After Stiles, 
1898, p. 49, fig. 
25.) 
