Praticolella jejuna (Say, 1821) Florida Scrubsnail

This unusual colored specimen is pictured below in situ as found with a normally colored specimen.

    Found under discarded 12 pack cardboard beer carton near retention pond northwest of the intersection of Interstate 9B and J. Turner Butler Boulevard, Jacksonville, Duval County, Florida 1/25/2014. Praticolella jejuna is very common at this location. Also see: http://www.youtube.com/watch?v=5tHckIBIrPQ&feature=youtu.be