6io 



JAPANESE STICKLEBACK. 



Gasferosteus Japonicus. G. spinis dorsalibus quatuor, membranes 



branchiostega quinqueradiata. 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. 



