NEW MAMMALIAN TAPEWORMS. 



1015 



of structure that I can detect from the vas deferens. It lies in 

 a loose coil of only two or three turns. Followed distally, this tube 



Text-%. 215. 



A. 



:}r 



P^ 



/ 



^ ^p 



B 



^A r 





Va 



V 





V 



\' 



■J 







Ayioplotania dasyuri. Cirrus sac with penis in various stages of retraction. 



In the upper figure the penis is completely retracted, in the middle figure it 

 is completely protruded ; in the lower figure it is incompletely protruded. 

 A, muscular pad on anterior side of genital cloaca; i?, muscular pad on posterior 

 side of genital cloaca which is perforated by opening of vagina (T^fl.) ; C, cirrus; 

 P., penis, on the posterior side of which, as is shown in the middle figure, the 

 cirrus ojjens ; Sp.d., vas deferens. 



69* 



