6io 



JAPANESE STICKLEBACK. 



Gasterosteus Japonicus. G. spirits dorsalibus quatuor, membrana 

 branchiostega qumqueradiata. Lin. Gmel. 



Stickleback with four dorsal spines, and five-rayed gill-mem- 

 brane. 



LENGTH about five inches: head obtuse: body 

 covered with large rhombic scales, each ciliated at 

 the edges and terminating in a spine: dorsal spines 

 thick, strong, moveable, and of unequal lengths: 

 ventral fins furnished with a thick, strong, and 

 scarcely moveable spine of about half an inch in 

 length : native of the Japanese seas. 



