FASCIOLOPSIN^E 



2 45 



sharply circumscribed spot at the base of the left lung. Twenty 

 days later during a fit of coughing the patient spat up a fluke 25 mm. 

 long, characterized by its slender aspect and by the size of its ventral 

 sucker, and its close proximity to the oral sucker. Considering the 

 fact that Gouvea's patient had spent many weeks in July of the same 

 year in Dakar (Senegambia), where according to Railliet Fasciola 

 glgantica is common in slaughtered animals, and considering also 

 the characters of the fluke, Railliet rightly assumes that one had to 

 do with the African giant fluke and that the patient had infected 

 himself in Dakar. 



Sub-family. Fasciolopsinae, Odhner, 1910. 

 Genus. Fasciolopsis, Looss, 1898. 



Ventral sucker large, and elongated 

 posteriorly iato a sac. Cirrus pouch 

 long and cylindrical, its greatest length 

 being occupied by the sinuous tubular 

 seminal vesicle, on which exists a peculiar 

 caecal appendage. Laurer's canal present. 



Fasciolopsis buski, Lank., 1857. 



Syn. : Distomum buski, Lank., 1857 ; 

 Dist. crassum, Cobbold, 1860, nee v. Sieb., 

 1836. 



The length of the body varies ; 

 it may measure 24 to 37 or even 

 attain 70 mm.; the breadth is from 

 5*5 to 12 to 14 mm. In the pig the 

 fresh parasites measure, smallest, 

 12 to 8 mm. ; largest, 35 to 16 mm. 

 (Mathis and Leger). Skin without 

 spines, but according to Heanly 

 always present in man and pig 

 specimens. The oral sucker 

 measures 0-5 mm. in diameter; 

 the ventral sucker is three to four 

 times as large ; the pharynx is 

 globular, 0*7 mm. in diameter ; 

 the prepharynx is provided with a 

 sphincter ; the intestinal caeca ex- 

 tend to the posterior border with 



FlG. 1 46. Fasciolopsis bitski, Lank . V. s. , 

 ventral sucker ; C.p., cirrus pouch ; /., inles- 

 tinal fork; S.v. t vitellaria ; 7'., testes ; 0., 

 ovary; Ms., sucker; Shg., shell gland; 

 Ut., uterus. Magnified. (After Odhner. ) 



