Genitalia and anatomy of Hystricella bicarinata. Capela de Graça: 46 whole genitalia excluding part of OSD, AG and gonads 47 penial papilla 48 longitudinal section of the penial papilla 49 ornamentation of the inner walls of the flagellum, the penial complex, the vagina and the genital atrium. Ridge between Pico do Facho and Pico da Gandaia: 50 whole genitalia excluding part of OSD, AG and gonads. NE slopes of Pico do Castelo: 51 section of vagina. Capela da Graça: 52 jaw. S slopes Pico do Facho: 53 mantle border. Scale bars 1 mm.