342 



THE ANIMAL PARASITES OF MAN 



consequence of the extent and improvement of the official inspection 

 of meat. 



The following table shows the relative frequency of the Cestodes 

 of man : 



Taenia africana, v. Linst., 1900. 



This worm measures over 1*3 m. in length. The segments are 

 all broader than they are long. The scolex is unarmed and is 

 provided with an apical sucker (0*16 mm.). The parasite measures 

 1-38 mm. in breadth, 1*03 mm. in width ; the suckers measure 

 0*63 mm. in diameter. The neck is very short and somewhat broader 



JMF.!Aetv t*.*^i 



FIG. 245. Mature segment of Tcsnia africana. The ovary is in the 

 middle, and behind it are the shell gland and vitellarium ; at the sides are 

 the testicles, and externally the excretory canals ; the cirrus pouch, the vas 

 deferens and the vagina are on the left. Magnified. (After v. Linstow.) 



than the scolex; number of segments about 600; the hindmost 

 segments measure 7 mm. in length and 12 to 15 mm. in breadth. 

 The genital pores alternate irregularly in the middle of the lateral 

 margin; the testes are very numerous and occupy the entire medul- 

 lary layer; the vas deferens is much convoluted; the cirrus pouch 



