SOME MAMMALIAN TAPEWORMS. 



647 



Dr. Meyner*, for which reason, of courtse, I have selected them. 

 The terminal region nearest the external pore has a thick muscular 

 sheath and the lumen is narrow. This section widens abruptly 



Text-fig. 155. 



0. 



RS. 



|i-~..,.. 



V. 



Transverse section througli mature segment of Bertiella cercopitheci. 



Nerve-cord (only one of the three strands visible). O. Ovary. B8. Receptaculum 

 seminis. V. Ventral water-vessel. Va. Vagina, to the left of which is seen 

 the dilated and coiled sperm-duct. 



* Loc. cit. pi. i. fig. 3, pi. ii. Hg. 9. 



