466 



CYSTIC STAGE OF T^NIA SAGINATA. 



have found in still more distinct form in other hookless Taeniadse 

 (Fig. 271). The size of this apparatus is hardly changed, so that it is 



Fig. 271. — Longitudinal section through 

 the head in situ. ( x 30.) 



Fig. 270.— Evaginated head of Cysti- 

 cercus Tcenice saginatw. ( x 30. ) 



now much smaller than the lateral cups to which it was formerly equal. 

 Eound about the rostellum one notices as usual a vascular ring, into 

 which the four longitudinal vessels open (Fig. 270). Even the lateral 

 branches of the latter can sometimes be followed for some distance. 



As to the distribution of the bladder-worms in the body of the 

 calf, I may remark that the large majority were found in the muscles. 

 After the muscles of the breast and neck those of the heart were 

 most infested, and specially those of the right ventricle. But the 

 greater number of the' bladder-worms in the heart had perished 

 before their full development, as was evident from the dirty white 

 tubercular little masses (1-3 mm.) which shone through the serous 

 lining. Similar deposits were found in many other organs, especially 

 in the liver and the lungs, which also exhibited some adult bladder- 

 worms. Similarly in the thymus gland, the capsule of the kidney, and 

 in the brain. 



The lymphatic system was quite normal, but in the inguinal 

 region, in Douglas' space and in other situations, numerous bluish-red 

 bodies, about the size of a pea and less, were to be noted, as in the 

 first animal. At many places the intestines were somewhat adherent 

 to one another, and also to the peritoneal lining of the body-cavity, 

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