[ToC]

 

A. Franklin Shull, Principles of Animal Biology, McGraw-Hill, 1924

DIAGRAM OF A SIPHONOPHORE COLONY COMPOSED OF SIX KINDS OF INDIVIDUALS

Medusae (jellyfishes) are formed by budding. Medusae do not resemble polyps but are bell-shaped individuals which after maturity become separated from the colony and swim freely in the water by means of rhythmic contraction of the bell.