(updated 14 October, 2000)
The new medusa that has been in northern Gulf waters for about 3 weeks. Large numbers are occurring (10/13/00) along the coast from Florida to at least Mississippi. The animals are large, many exceeding 70 cm in diameter. Based on what we have now, it looks like it belongs in Cyaniidae, but this is not Cyanea capillata, not do I think it is C. lamarckii.
Some general notes:
Here are some pictures...
Many were swimming upside down at the surface like this one .
Held in one of our kreisels.
Close-up of tentacles.
Mesoglea is very clear (note the bell is folded to show this).
Lappets form a 'w', there are 8 per inter-rhopial space, 64 total. (8 rhopalia)
Bell margin. Grid is 1 cm2.
Tentacle clusters (>5 total) extending from the cleft between adjacent lappets.
This animal was 61 cm laid flat (aboral down).