A question from one of the quiet ones.
 
  In Goto's & Anseeuw book "The Living Pleurotomariidae"
  they say that Perotrochus gemma is a form of Perotrochus
  quoyanus and not a seperate species. My question is:
 
  Is this accepted as a fact, and if so how is it scientifically
  identified?
 
      A. Perotrochus quoyanus gemma
            Fischer & Bernardi, 1856
                     or
               Bayer, 1965
 
 
     B. Perotrochus quoyanus forma gemma
           Fischer & Bernardi , 1856
                     or
                 Bayer ,1965
 
 
     Or are they still considered 2 seperate species.
 
 
                                                  Craig Caddigan