Not a Scyphozoan Jellyfish

[BioFish]

I am having trouble IDing a jellyfish. I know it will be hard without a picture but I will do my best to describe. It is slightly bigger than a copepod. It has a clear body with white beads around it's "skirt". The best I can tell, It does NOT have tentacles (so not a hydroid). It has the shape of a Scyphozoan Jellyfish but swims upright. It comes to the surface with lights on during feeding of small particles food.

Good Luck! and thanks in advance.