266 Veterinary Medicine. 



Pathogenesis. Causes the ordinary symptoms of intestinal 

 worms. Megnin and Perroncito have described saccules of the 

 intestines filled with these taenia, and rupture of such pouches 

 causing peritonitis, colics and death. 



Taenia Mamillana. Mammiform tape-worm. Length 

 I to 5 cm. Head tetragonal, smaller than in perfoliata, suckers 

 opening in a hemispherical longitudinal slit, no proboscis nor 

 booklets. Segments at first hemispherical clasping the head, then 

 widening and lengthening to finally 4 to 6 mm. broad, by 2 to 3 

 mm. long. Ova oblong 88/* in length. Larva unknown. 



Habitat. The duodenum and ileum, (exceptionally the stomach) 

 of solipeds. It has been found in Germany (Blumberg, Greve, 

 Hering), Scandinavia (Krabbe), France (Cadeac), and America. 

 It is less common than T. Perfoliata. 



Taenia Plicata. Folded tape-worm. Head very large, 

 tetragonal, but slightly flattened (2 mm.) but without proboscis 

 or booklets. Suckers cupped and directed forward. Length 

 may be 6 to 30 inches (Davaine, Railliet, Cadeac). Maximum 

 breadth at the middle of the body 6 to 20 mm. Length of seg- 

 ment gradually encreases to 2 mm. at the tail. Ova round or 

 polyhedral. Larva unknown. 



Habitat. In the small intestine and (rarely) in the stomach. 

 It is more rare than the /f>/£>/za^a and mamillana. It has been 

 found in the ass in great numbers in Senegal (Sarciron), in the 

 mule at Gabes, Tunis, (Beugnot), in France (Hendrickx, Blanc) 

 in Germany (Hering). 



Pathogenesis. It is generally held to be harmless, but the 

 cases of Sarciron and Hendrickx show that when present in large 

 numbers it may cause indigestion and even enteritis. 



Symptoms of tape-worms. These are those of intestinal 

 worms in general, unthrift, low condition, variable appetite, ir- 

 regular bowels, indigestion, colics, enteritis, anaemia, pot-belly, 

 skin eruptions, and above all the passage of ripe segments of the 

 worms. These are however, only discovered with difSculty. 



Treatment. As for taenia in other animals and will be described 

 later. 



Cysticercus Fistularis (pipe-like bladder-worm). This is 

 the larva or cyst of an unknown tape- worm. It has been found 

 on rare occasions in the peritoneum of the horse. It has a length 



