LARVAL FORMS OF TAPEWORMS 63 



The cysticercus of this species is found in the common house- 

 fly, Musca domestica. 



Drawings should be made to illustrate the main characteristics 

 of the above species of tapeworms 



EXERCISE 35 



OTHER TAPEWORMS 



With the characters studied in the preceding exercises well in 

 mind the student should examine carefully entire specimens in 

 formalin (not slide mounts) of the following species, taking notes 

 and making drawings such as are necessary to indicate the 

 characters found. 



a. T&nia saginata is the beef tapeworm (fat tapeworm) of 

 humans, the cysticercus stage, Cysticercus bows, being found in 

 cattle. 



b. Monieza (Tcenia) expansa is the broad tapeworm of rumi- 

 nants; the larval form is unknown. 



c. Tania coenurus is a tapeworm inhabiting the intestine of 

 the dog, wolf and coyote. While not dangerous to these hosts 

 the larval form is the disastrous gid parasite of sheep. 



d. Tania fimbriata is the fringed liver tapeworm of sheep, a 

 very injurious parasite of which the cysticercus stage is unknown. 



e. Tania crassicollis is the thick-necked tapeworm of the cat. 

 The cysticercus stage is found in the liver of small rodents, such 

 as rats and mice. 



EXERCISE 36a 



LARVAL FORMS OF TAPEWORMS 



Larval tapeworms are known as cysticerci (cysticercus), 

 cosnuri (ccenurus), or echinococci (echinococcus), depending on 



