New genus, two new species and new records of subterranean freshwater snails (Caenogastropoda; Cochliopidae and Lithoglyphidae) from Coahuila and Durango, Northern Mexico


	Shells and opercula of Phreatomascogos gregoi gen. n. et sp. n. 2, 3 holotype, UJMC 400 4, 5 paratype 1, UJMC 401 6, 7 paratype 2, UJMC 401a, shell apex with protoconch 8 umbilicus almost completely covered by a basal keel, UJMC 401b 9 paratype 3, UJMC 401d, conical specimen 10, 11 opercula 11 operculum showing the strongly campanulate shape. Scale bars: 0.5 mm (2–5, 9–11); 0.3 mm (8).

Part of: Czaja A, Cardoza-Martínez GF, Meza-Sánchez IG, Estrada-Rodríguez JL, Saenz-Mata J, Becerra-López JL, Romero-Méndez U, Estrada-Arellano JR, Garza-Martínez MA, Paulín JAD (2019) New genus, two new species and new records of subterranean freshwater snails (Caenogastropoda; Cochliopidae and Lithoglyphidae) from Coahuila and Durango, Northern Mexico. Subterranean Biology 29: 89-102. https://doi.org/10.3897/subtbiol.29.34123