MAMMALIAN CESTODES. 



563 



the appearance of the mere beginning of such a chamber. There 

 is no trace of sperm to be found in it, and it is so small that I 

 have not been able to detect it in other sections of neighbouring 

 segments. The particular section to which attention has been 



Text-fie-. 92. 



B 



I f ^•^•..,.. /■ 



A 



^1 



C c. 



Three sections through the generative region of Biplopi/lidium genettcB. 



A. Section to show relations of vagina (?) and cirrus-sac ( c?), the latter lying 



behind the former. 



B. A transverse section through the receptaculuni seminis and adjacent parts 



of the generative system. 



c. Cirrus-sac. o. Vitelline gland, r.s. Receptaculuni seminis. v. Vagina. 

 vit. Ovary. 



C. Transverse section showing immature receptaculuni seminis {r.s.) and 



anterior position of vagina (u.). 



c. Cirrus-sac. 



X.B. — There is an appearance of a diverticulum of the cirrus probablj- due to 

 irregular staining. 



Proc. Zool. Soc— 1913, No. XXXVIII. 



38 



