ANTHOMEDUS.E STEENSTRUPIA. 



33 



The following description of the medusa is derived from a study of specimens found by 

 the author off the coast of the United States: 



The bell is 5 mm. high and surmounted by a slender conical projection about 2 mm. 

 long. There are 4 tentacles. One of these is about 10 mm. long, and is ringed at irregular 

 intervals by prominent swellings, between which there are small rings at fairly regular inter- 



FIG. 5. Corymorfha nuians, hydroid and medusa, after Allman, in Ray Society, 1871-72. 

 A' Detail showing manner in which medusa 1 bud off from hydranlh. 



