90 



MR. F. E. BEDDARD ON THE 



[June 3, 



Indeed, the genus Euclrilus at present seems to be rather 

 exceptional in the structure of these organs. No one, so far as I 

 am aware, has traced out the development of the various ducts 

 and pouches of the generative oi'gans, by which alone a clear idea 

 of the homologies of those parts can be acquired. It is this part 

 of the subject to which I desire to draw attention in the present 

 communication. I have studied three series of longitudinal 



Text-fig. 17. 



Series of three sections througli the immature female generative system of Eudrilus, 

 highly magnified. The sections follow in order from above downwards. 



S, septum dividing segments xiii. /xiv. : F, oviduct ; A, receptaculum ovorum ; 

 S.P, spermathecal sac. 



In section 1 the oviduct and spermathecal sac open into the coelom. 



sections through the generative region of immature and quite 

 small examples of a species of the genus Eudrilus, which, on 

 account of their immaturity, I have been unable to identify. tSo 



