Zool. 1903. 



Plate VI. 



Movement in vertical plane. 

 Tail slightly Hexed. 



Movement in horizontal plane. 

 Tail strongly flexed. 



At rest on floor of tank. Body bent 

 into an S-shape. 



Characteristic Attitudes of the Common "Sea-Horse" [Hippocampus 

 antiquorum), from Examples in the Amsterdam Aquarium. 



