122 CLASS XI. ORDER II, 



TJENIA, (tape-worm,) body flat and composed 

 of numerous articulations ; head with four orifices 

 for suction, a little below the mouth ; mouth ter- 

 minal, continued by a short tube into two ventral 

 canals, and generally crowned with a double se- 

 ries of retractile hooks or holders. In man and 

 most mammalia, birds, reptiles and fish. 



FURIA, (cattle- pest,) body linear, equal, fili- 

 form and ciliate each side with a single row of re- 

 flected prickles pressed close to the body. In 

 the skin of man and horse in Finland. 



SCOLEX, body gelatinous, variously shaped,, 

 broadish on the forepart, and pointed behind ; 

 sometimes linear and long, sometimes wrinkled 

 and short, round, flexuose or depressed ; head 

 protrusile and retractile. In fish. 



LIGULA, body linear, equal, long ; the fore 

 part obtuse, the hind part acute, with an impress- 

 ed dorsal suture. In merganser and fish. 



