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