Nice finds, There are 3 species of cyphoma in the keys
cyphoma gibbosum this you have already found.
cyphoma mcgintyi enlongate w/ tints of lilac or purple on the back and one
end is more pointed
cyphoma signatum same as mcginy but the
  transverse ridge is weaker abd the anterior end more dilated. the animal
has black lines that look like a fingerprint. i would guess that you have
found the mcgintyi
Mark James Bethke
 
 
-----Original Message-----
From: Martin E. Tremor, Jr. <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: Friday, June 26, 1998 10:07 PM
Subject: What kind of a Cyphoma is that?
 
 
>Have just returned from a trip to the keys. Found many Cyphoma gibbosum on
the
>sea fans. Took 2 nice large ones and left the rest for posterity. One shell
>was of particular interest, and caught my eye immediately. It was a
Cyphoma,
>also on a sea fan, however the color of the animal was completly different.
>The mantel was a cream with purplish tint, the spots were dark purple with
a
>darker purple to black ring around them. This shell was taken and measures
>20mm in length, it is somewhat more elongated then the Cyphoma gibbosum.
The
>color of the shell is white to cream with purple, the inside of the shell
is
>purple. the lip cream white.
>
>Can anyone please help with identification of this unusual Cyphoma species?
>
>Thanks
>
>Martin E. Tremor
>St. Petersburg, Florida
>