FIG. 31 in The systematics of Pyrenean and Cantabrian Cochlostoma (Gastropoda, Cyclophoroidea) revisited

FIG. 31. Shells of Cochlostoma bicostulatum. a,b,c: female (10.8 mm) and male (9.9 mm) from Santillana (Santander). d. male (9.6 mm) with blurred spiral bands, from Covadonga (Asturias). e,f,g: apical part showing embryonic whorls, specimen from OrinÄon (Santander) (scale bars are 1 mm).