Phialopsis diegensis


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Distribution: 
Off San Diego, California; South Atlantic and South Pacific.
Habitat: 
0-300 m
Size: 
20-30 mm bell diameter, as adults.
Useful Facts or Characters: 

It is 3-4 times as wide as high and bears 16-28 tentacles.

References: 

Torrey, H.B. (1909) The Leptomedusae of the San Diego Region. University of California Publications in Zoology 6: 11-31.