Comparative material, Carychium floridanum Clapp, 1918 (CM 46540). A–F CT scans showing columellar apparatus and simple lamellar sinuosity of syntype C moderately thickened S-shaped lamella A, E zones of increased callus concentration on the peristome G umbilical view showing turned back rim of peristome. Scale bar 1 mm.

 
 
  Part of: Jochum A, Weigand AM, Bochud E, Inäbnit T, Dörge DD, Ruthensteiner B, Favre A, Martels G, Kampschulte M (2017) Three new species of Carychium O.F. Müller, 1773 from the Southeastern USA, Belize and Panama are described using computer tomography (CT) (Eupulmonata, Ellobioidea, Carychiidae). ZooKeys 675: 97-127. https://doi.org/10.3897/zookeys.675.12453