About fifty species are recognized at present.
I opined to keep Quinn and Martha out of the picture, at least at present.
The sardine fishery, which might also be important, at present serves mainly for local consumption.
At present, therefore, classifications of the Hydromedusae have a more or less tentative character, and are liable to revision with increased knowledge of the life-histories of these organisms. Many groups bear at present two names, the one representing the group as defined by polyp-characters, the other as defined by medusa-characters.
Corbridge was formerly of greater importance than at present.
