DISTOMA HEPATICUM. 229 



Spec. Char. Body elongated ; mouth fringed at the 

 margin with six small papillae ; tail of the male bifid, 

 in the female obtuse. 



S. gigas '■> Rud- Entoz. p. 31,260. Lc Strangle cles Reins ; An. sans Vert. iii. p. 202. 



This species is found in the kidneys, and has been passed frequently 

 by the urethra, causing symptoms of great irritation in the urinary 

 organs and bladder. It is also met with in many of the lower 

 animals ; in dogs, oxen, horses and sheep. It varies in length 

 from five inches to three feet, and in diameter from two to six lines. 

 The body is slender, cylindrical, tapering towards each extremity, 

 and composed of annular rings. The head or anterior part of the 

 animal is globular and truncated, with a circular aperture, furnished 

 with six minute papillae. The female is larger than the male. 



DISTOMA HEPATICUM. 



The Liver Fluke. 

 Pl. XXIX. A. Jig. 3. 



Order Trematoda, Rudolphi. 



Gen. Char. Body soft, rounded or compressed ; an- 

 terior opening single. 



Spec. Char. Body obovate, flat; neck very short; 

 posterior opening of the belly large and slightly pro- 

 minent. 



Fasciola humana ; Syst. Nat. Gmelin, p. 3085. Fasciola hepatica; Joerdens, 

 Helminth, t.7, f. 13, 14. Rudol. Enloz. p. 92, 363. 



FascioleHepatiquc,Yv.; Bisciuola, It. ; Caracoliiios, Sp.j Ltbcrdojjpelloch; 

 der Leberwurm, Gcr. 5 Lever Mask, Swed. 



