Types. A–B. Holotype of Acteocina cederstromi, H 4.0 mm, ANSP IP16771. C–D. Holotype of Acteocina chowanensis, H 3.8 mm, ANSP IP16754. E–F. Lectotype of Acteocina crassiplica, H 6.0 mm, ANSP IP13412. G–H. Paratype of Acteocina kirkwoodiana, H 5.0 mm, ANSP IP15935. I–J. Holotype of Acteocina puruha, H 7.6 mm, ANSP IP13684. K–L. Holotype of Acteocina subbullata, H 9.9 mm, ANSP IP3193. M–N. Syntype of Acteocina weatherlli, H 4.6 mm, ANSP IP14431. O–P. Syntype of Acteon biplicatus, H 17.2 mm, ANSP IP19466; also, syntype of A. gabbana. Q–R. Syntype of Acteon cretacea, H 19.1 mm, ANSP IP18778. S. Holotype of Acteon elegans, H 6.0 mm, ANSP IP6011. T–U. Syntype of Acteon forbesiana, H 9.2 mm, ANSP IP18777.