868 DR. F. E. BEDDAHD ON 



is somewhat bottle-shaped. The narrow region, however, — the 

 neck of the bottle — is not anterior where tlie cirrus-sac opens into 

 the common genital a.trium, but posteriorly where the sperm - 

 rluct opens into it. I have not always seen this na,i-row backward 

 prolongation of the cirrus-sac ; but I have seen it in more than one 

 case. There is no difference in its structui'e from that of the 

 main part of the cirrus-sac *. The cirrus, as usual, lies coiled 



Text-fig. 145. 

 o n. 



m 



/ 



Viwi of a horizontal section through a proglottid of Eugouodaxm oedicnemi, 

 to show further course of vagina. 



e. Ea-g-sacs. m. Longitudinal niuscle-fibves. n. Nerve-cord. v. Vagina, full of 

 sperm and widening above to form a receptaculum seminis, thence bending 

 l)ack again to divide into the two usual branches o. & Vit., which are arranged 

 in the same straight line with each other. 



within the sac and when protruded, as shown in text-fig. 144, is 

 broader at the protruded end. This is inserted into the vagina, 

 the proximal dilatation of which it completely fills, as is shown in 

 the same figure. The sperm-duct, after leaving the cirrus-sac, 

 runs in a straight or slightly sinuous course, at first quite parallel 



* It is possibly temporary, and due to unequal contraction. 



