Types. A. Holotype of Acteon glans, H 1.9 mm, ANSP IP1517. B–C. Syntype of Acteon idoneus, H 11.1 mm, ANSP IP30547. D–E. Lectotype of Acteon lineatus, H 8.6 mm, ANSP IP5541. F. Holotype of Acteon nitens, H 4.0 mm, ANSP IP1516. G–H. Syntype of Acteon novellus, H 12.0 mm, ANSP IP1600. I–L. Syntype of Acteon ovoidea, H 23 mm, ANSP IP56167. 32–33. Same, H 21.0 mm, ANSP IP56166; also, holotype of A. subovoides. M–N. Lectotype of Acteon politus, H 8.2 mm, ANSP IP4266. O–P. Syntype of Acteon pomilius, H 10.1 mm, ANSP IP30546. Q–R. Syntype of Acteon punctatus, H 8.8 mm, ANSP IP5537. S–T. Holotype of Acteon subtornatilis, H 18.1 mm, ANSP IP3183.