Anatomy and genitalia of Hystricella echinulata. Terra Chã: 83 whole genitalia excluding gonads 84 ornamentation of the inner walls of the distal penis, the distal vagina and the genital atrium 85 ornamentation of the inner walls of the flagellum, the penial complex, the vagina and the genital atrium 86 penial papilla 87 whole genitalia excluding part of OSD, AG and gonads 89 penial papilla and ornamentation of the inner walls of the flagellum 91 mantle border 92 section of penial papilla. Faja Pequena: 88 section of vagina 90 jaw 93 whole genitalia excluding gonads. Scale bars 1 mm.