11–13: Pyrgophorus thompsoni sp. n. 46 m deep from Cenote Xoch, Cenotillo, Yucatán, Mexico (holotype HNHM 104157) 14–16: P. thompsoni sp. n. (paratype) 17–19: Pyrgophorus coronatus (L. Pfeiffer, 1840) 8 m deep in Cenote Tzitzila, Dzonot Aké, Yucatán, Mexico (17) 27 m deep from Cenote Dzontila, Mucuyché, Yucatán, Mexico (18–19).

 
 
  Part of: Grego J, Angyal D, Beltrán LAL (2019) First record of subterranean freshwater gastropods (Mollusca, Gastropoda, Cochliopidae) from the cenotes of Yucatán state. Subterranean Biology 29: 79-88. https://doi.org/10.3897/subtbiol.29.32779