54 



VARIOUS FORMS OF TAPEWORMS. 



Various Forms of Tapeworms of Economic Importance. 



Muftiirps innliici'i)^. Hall. 



= C'li'nurus cerebrali!^ = Tuinia ci.nnwux 



(which causes the Sturdy, Gid, or Staggers in Sheep). 



Ill dogs, especially in sheep-dogs, we commonly find a tape- 

 worm known as Tunbi cumtinix (fig. 14, c). This worm, 

 which may also exist in other animals, such as the fox, lives 

 in the inte.stines. There is no proof yet, however, that the fox 



Flo. U. — M-URDY IN ShEEI- 



{^Midthrps midfkeps and Txnia caiinnis). 

 A, Ovani. B, Embryo, c, Kexiiiil worm (Tiniia en uurus) : p, pro^-lottides ; u, neck ; 

 """' " Multiceps miiUmps: i; cerebral hiiiiispliere.s ; cb, cerebellum; m, 



s, smjkers. 



medulla, f, Hook from c. 



does harbour this worm. It can be distinguished by having a 

 circle of hooks around its head, which is slightly drawn out into 

 a rostellum, and by its four suckers. In length it varies from 

 twelve to sixteen inches when adult, and is constituted of about 

 two hundred distinct segments. The pale proglottides full of 

 eggs are passed out on to the ground in the sheep-dog's excre- 

 ment, and there remaining for a short period, they burst, re- 



