ii4 ZOOTOMY. 



one another in the middle line, and send off a short common 

 duct, which passes, closely attached to the front wall of the 

 ureter, to the genital aperture. 

 ./// the Female. 



132. The ovaries, two conical bodies, united with one 

 another posteriorly and sending off from the point of junc- 

 tion a short oviduct which passes downwards between the 

 ureter and the rectum to the genital aperture. 



XXV. Remove the reproductive organs and the ureter 

 from the body, along with a small portion of 

 the body wall containing the urinary and genital 

 apertures : in cutting through the ureter leave a 

 recognisable piece of its dorsal end, as it will 

 have to be traced to the kidney ( 143) : pin 

 out these organs under water, and make longi- 

 tudinal incisions though the ureter and the vas 

 deferens or oviduct and ovary ; note 



133. A median partition dividing the dorsal end of the ureter into 

 two tubes. 



/// the Male. 



134. The common genital canal, receiving the vasa 

 deferentia, opening externally by the genital aperture, and 

 separated by a thin partition from the ureter. 



135. The numerous small apertures in the vas deferens 

 by which it receives the secretion from the lobes of the 

 testis. 



Jji the Female. 



136. The large central cavity of the ovary, encroached 

 on by irregular processes of the substance of the organ, on 

 which the ova are developed. 



137. The cavity of the oviduct, continuous with those of 

 the two ovaries, and opening externally by the genital 

 aperture. 



