THE SKATE. 



57 



portion (ut), opening into the cloaca, and an anterior, 

 slender, thin-walled portion, or Fallopian tube (/./) 

 which unites with its fellow of the opposite side on the 



Fig. 19. — Raja batis. The urinogenital organs of the female (one- 

 third nat. size). 



The organs are removed from the body along with a small portion of 

 the oesophagus {ois), and are viewed from the ventral aspect. The left 

 ovary {pro) is removed as well as the greater part of the right oviduct ; 

 the cloaca and the right horn of the urinary bladder are laid open. 



a.p, abdominal pore: cl, cloaca: fl.t. Fallopian tube, or anterior 

 portion of oviduct : fl.f, common opening of the conjoined Fallopian 

 tubes into the abdominal cavity : k, kidney : mn.d, mesonephric duct 

 od.g, oviducal gland ; ces, oesophagus : ov, ovary : u.b, urinary bladder 

 u.p, urinary papilla : ur, ureters : ut, uterine portion of oviduct 

 »/', its opening into the cloaca. 



