198 
masses lying one on each side of the 1st axonost on the 
posterior wall of the body cavity. They are indistinctly 
lobulated, but not follicular as in the Cod and so many 
other Teleosts. They are much smaller than the ovaries 
in the female and project forwards only a little way into 
the body cavity. There is no posterior extension beyond 
the limits of the latter at any phase in the spawning cycle. 
They are tubular glands, but the walls of the seminiferous 
tubules are closely opposed and there is little or no con- 
nective tissue between them. The whole organ appears 
therefore as if divided up by a system of irregular 
trabeculze in the meshes of which are massed the sperma- 
tozoa. 
Towards the ventral and anterior extremity of the 
testes the volume of the organ rapidly diminishes, and if 
traced in serial sections the number of tubules becomes 
much less. Finally three or four such run forwards on 
each side laterally and dorsally to the terminal portion of © 
the ureter. These unite, and a single duct on each side 
runs alongside the latter and opens into its terminal 
portion quite near the urinary papilla. The terminal 
portion of the ureter is therefore a urinogenital sinus. If 
the abdomen of a male fish when near the spawning season 
be gently pressed, the seminal fluid issues from this 
papilla. In the female it is a urinary papilla only, in the 
male a urinogenital papilla. 
