Jensen et al : The reproductive biology of Lamna nasus in the western North Atlantic Ocean 



729 



Clasper 



Ampulla 



B 



Junction 



Vagina 



Epigonal 



Epididymis 



Oviducal 

 Gland 



X_^ 



Head of 

 Epididymis 



Upper 

 Oviduct 



Osteum 



Cloaca 



Lower 

 Uterus 



Ovary 



Efferent Pore 



Anterior 

 Uterus 



Figure 1 



Reproductive systems of the porbeagle shark: (A) male reproductive tract with closeup inserts of the head of the epididy- 

 mis and the ampulla epididymis and (B) female reproductive tract with a closeup of the upper oviduct leading into the 

 ostium. 



