Comparative material (Jochum et al. 2017), C. belizeense Jochum & Weigand, 2017 paratype (NMBE 549924/8), C. costaricanum E. von Martens, 1898 (RBINS 10591), C. floridanum Clapp, 1918 (CM 46540), C. hardiei Jochum & Weigand, 2017 paratype (NMBE 549921/8), C. jardineanum (Chitty, 1853) (AJC 2321), C. mexicanum Pilsbry, 1891 (AJC 2092). CT images showing columellar apparatus, configuration of the columellar lamella and umbilical perspectives showing peristome configuration in allied Central American, Southeast USA and Caribbean species. Scale bar: 1 mm.