834 PARASITIC DISEASES, 



Genus Tricliocephalus. 



Species (a.) T. dispar of man. 



„ (&.) T. affinis of sheep and goat ; rare in cattle ; found in 



csecum. 

 „ (c.) T. depressiusculiLs of the dog ; found in the caecum. 

 „ {d.j T. crenatus of the pig and wild boar ; found in the large 



intestine. 



N. 0. Trematoda. 

 y Genus Distoma (Fasciola of some authors). 



(1.) Distoma hepatieum. — Leaf-like form, with a smaU sucker round 

 the mouth, and a little behind this a ventral sucker, also small. 

 Habitat, gall ducts and gall-bladder (usually only in spring) of 

 sheep, cattle, goat, and pig. Earely in horse, ass, cat, and 

 very rare in man. 



(2.) Distoma lanceolatam. — Lance-like form, with a tolerably large 

 ventral sucker. Habitat, gall ducts and gall bladder of sheep, 

 cattle, goat, pig. Wandering specimens also in blood-vessels 

 and heart. 



(3.) Distoma campanulatum, according to Ercolani, occurs in the liver 

 of the dog. 



(4.) Distoma conjunct iim, found in the bile ducts of Indian dogs. 



(5.) Distoma species have been found in muscles of pig, more particu- 

 larly in the diaphragm. 



Genus Amphistoma. 



(1.) AmpTiistoma conicum, cone-shaped, thick posteriorly, with a 



large sucker at the posterior end. Habitat, paunch of cattle. 

 (2.) Amjjhistoma truncatum of cat. 



Genus Hemistoma — Holostoma. 



(1.) Hemistoma alatum of dog, wolf, and fox; found in small in- 

 testine. 

 (2.) Hemistoma cor datum of cat. 



Genus Gastrodiscu^. 



(1.) Gastrodiscus polymastos, a disc-shaped trematode found by Dr. 

 Sonsino in Egyptian horses. 



