THE GOBIES SUCKERS, AND BLENNIES 155 



It is not to be thought that all of the foregoing families 

 and genera are very closely related on anatomical grounds, 

 though the first five families have much in common. 

 The stickleback and pipe-fishes are merely included for 

 convenience in a chapter planned to dispose of all the small 

 shore-haunting forms found in our rock pools and filling 

 a somewhat similar place in nature's economy. They live 



