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 
jiarallel for greater part 
of length, especially of the 
anterior half; posterior 
end obtuse. Oral sucker 
1.12 mm. in diameter; 
ventral acetabulum some- 
v’hat larger. Skin with 
spines. Pharynx, — ? — ; 
esophagus extends nearly 
to acetabulum; intestinal 
ceca more p r o f u s e 1 y 
Vjranched than in F. hepa- 
tica. Genital iiore me- 
dian, about halfway between mouth and 
acetabulum. Male organs: Similar to 
those of F. hepatica, 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. hejjatica, 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 taurus) , zebu 
{Bos indicus), buffalo {Bos hubalis), 
sheep {Oris aries), goats {Capra hircus), 
in Africa. One case reported for lungs 
of man {Homo sapiens). 
Giant Liver 
Fluke {Fasci- 
ola gigantica 
[F. hcpatica 
?cggj)tiacaY), 
drawn from 
one of Looss’s 
specimens, 
natural size. 
(After Stiles, 
1898, p. 49, fig. 
25.) 
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« Veknacular names. — The giant liver 
fluke; the narrow liver fluke; the Egyp- 
tian liver fluke. 
Synonyms. — Fasciola gigantica Cob- 
bold, 1856; Distomum giganteuin Dies- 
ing, 1858; Bistoma liepaticum (in part) 
of Gervais & van Beneden, 1859; Fasciola 
giganiea {Blesing) Cobbold, 1858; Clado- 
coelium giganteuin f Diesing) Stossich, 
1892, in part; Fasciola hepatica angusta 
Bailliet, 1895; Fasciola hepatica regyp- 
tiaca Looss, 1896; Fasciola angusta. 
Bibliography. — F or bibliography 
and technical discussion, see Stiles (1895, 
pp. 139-143) ; Looss (1902, pp. 782-783). 
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