In an older book on Freshwater microsopy there is a similar BW photo - the author identifies as Rhincomesostoma a free living Turbellarian similar to Dalyellia.
However I can not find a reference to this animal in the keys or books I have or on the web for that matter. If there are any flat worm experts out there I would appreciate your help. Alternatively if you can recommend some good guides on Turbellarians that would be appreciated.
