CHARACTERS OF FISHES. 375 



often set free into the peritoneal cavity, ultimately finding their 

 way to the external medium, either by means of an abdominal 

 pore (or pores), or by being taken up by the open mouths of 

 the "Fallopian tubes." In other cases the generative pro- 

 ducts are directly conveyed to the exterior by the jroper ducts 

 of the reproductive organs. 



