Elimia interrupta ( Haldeman, 1840 )

Minton, Russell L., Bogan, Arthur E., Brooks, Jeff A. & Hayes, David M., 2004, Taxonomic revision of Elimia christyi and E. interrupta (Mollusca: Caenogastropoda: Pleuroceridae), Zootaxa 735, pp. 1-9 : 6

Elimia interrupta ( Haldeman, 1840) [non Burch and Tottenham, 1980]

Knotty Elimia

Melania interrupta Haldeman, 1840

Haldeman 1840, [1]; Wheatley 1845, 25; Jay 1852, 274; Brot 1862, 34; Reeve 1860, sp. 398 Goniobasis interrupta ( Haldeman, 1840)

Tryon 1864, 29; Tryon 1873, 171, figs. 330­333

Type Designation and Locality: Lectotype ANSP 8760a, Nashville, ex auctorum, figure 331 in Tryon (1873), designated by Baker (1964). Paralectotypes ANSP 8760, Nashville, ex auctorum [figures 332 and 333 in Tryon (1873)].

Known Distribution: Tennessee ( Haldeman 1840); Nashville [Tennessee] ( Baker 1964); southern United States ( Reeve 1860).

Description: “Shell conical, with 4 flat whirls which are crossed by elevated ribs and spiral lines: apex truncated; suture indistinct; aperture elliptic, two thirds the length of the shell. Color olivaceous, sometimes banded with black. Length, ½ inch” ( Haldeman 1840, [1]). “Shell ovately turreted, greenish, somewhat transparent, encircled with narrow olivebrown bands, whorls few, rounded, obliquely plicately noduled; aperture oribcularly ovate, columella scarcely reflected…A prettily variegated, plicately noduled species, of rather transparent substance, encircled with narrow bands, which have a brown rusty appearance internally, but on the outside are a dark olive­green” ( Reeve 1860, sp. 398).

Remarks: The description given by Haldeman (1840), and the description and figure in Reeve (1860) most closely match the shell illustrated in Tryon (1873, fig. 330) missing from the lectotype lot. Baker’s lectotype lacks the spiral lines and nodulose appearance mentioned by Haldeman and Reeve respectively. We follow Burch (1982, 2001) in considering this species in Elimia .