Types. A–B. Syntype of Cinulia naticoides, H 9.0 mm, ANSP IP18784. C–D. Syntype(?) of Cinulia rectilabrum, H 9.9 mm, ANSP IP4753. E–F. Holotype of Ringicula hypograpta, H 2.0 mm, ANSP IP3841. G–H. Syntype of Ringicula lata, H 15.4 mm, ANSP IP30695. I–J. Lectotype of Ringicula mississippiensis, H 3.7 mm, ANSP IP13414. K–L. Syntype of Ringicula trapaquara, H 2.3 mm, ANSP IP6468. M–N. Lectotype of “Ringicula” varia, H 7.1 mm, ANSP IP4264. O–P. Holotype of Roxania hornii new comb., H 20.1 mm, ANSP IP4232.