Chrysallida sculpta (Lea, 1846), new comb.

Cunha, Carlo M. & Salvador, Rodrigo B., 2018, Type specimens of fossil " Architectibranchia " and Cephalaspidea (Mollusca, Heterobranchia) in the Academy of Natural Sciences of Philadelphia, Zoosystematics and Evolution 94 (2), pp. 505-527 : 505

Chrysallida sculpta (Lea, 1846), new comb. Figure 6 Q–R

Acteon sculptus Lea, 1846: 257, pl. 36, fig. 59.

Type locality.

Petersburg, Dinwiddie County, Virginia, USA; stratum: Yorktown Formation; age: Late Miocene to Middle Pliocene.

Type material.

Syntypes, ANSP IP1515, 2 shells (as “types” in Richards 1968: 186).

Taxonomical reassessment.

This species is better classified in the genus Chrysallida due to the following conchological features ( Robba 2013): a weak or absent columellar fold, teleoconch sculpture consisting of collabral ribs and spiral cords of similar strength. Most species of Chrysallida are strongly sculptured, as the present specimens, with the ribs forming nodes where crossing the spiral cords and tending to fade away near the base.