EEPEODUCTIVE SYSTEM 



65 



1. The female organs consist of a pair of ovaries ; a pair of 



oviducts, with a receptaculum ovorum opening into 



each ; and two pairs of spermathecse. 



a. The ovaries, which he in segment xiii., are a pair of 



white pyriform bodies attached to the septum 



Fig. 17. — Lumbricus terrestris. Plan of the genital organs as seen from 

 above after removal of the alimentary canal. The body-wall is 

 pinned down flat. (c. h. h.) 



A, anterior lateral vesicula semlnalis. B, first median vesicula seminaliB. 

 C, posterior lateral vesicala seminalls. ^, nerve-chain. O, ovary, OD» 

 oviduct. Rj receptaculum ovorum. S, spermathecsB. SF»%: seminal 

 tunnel lying in tlie median vesicula seminalis. T, testis. VD, vas deferens : 

 the reference line indicates the point where the posterior vas eSerens opens 

 into it, 9 to 15, ninth to fifteenth segments. 



