Lamellaria spp.

Simone, Luiz Ricardo L. & Cunha, Carlo M., 2012, Taxonomic study on the molluscs collected in Marion-Dufresne expedition (MD 55) to SE Brazil: Xenophoridae, Cypraeoidea, mitriforms and Terebridae (Caenogastropoda), Zoosystema 34 (4), pp. 745-781 : 751-752

Lamellaria spp.

( Fig. 3G, H )

MATERIAL EXAMINED. — Brazil, Espírito Santo, off Itaúnas, continental slope of Abrolhos, 18°59’S, 37°48’W, 607- 620 m depth, MNHN, 1 shell ( MD 55, stn DC 73, Bouchet,

Leal & Métivier coll., 27. V.1987).— Off Regência, 19°40’S, 37°48’W, 790-940 m depth, MNHN,1 shell (stn CB 77). — Off Conceição da Barra, 18°59’S, 37°47’W, 1540-1550 m depth, MNHN, 3 shells (stn CD 70, 26. V.1987).

MEASUREMENTS (in mm). — MNHN (stn DC73): 3.7 × 2.7.

DISCUSSION ON LAMELLARIIDS

Typical shells of Lamellaria were collected in the three above-mentioned stations. However, nothing more precise than the generic attribution is possible, as the identification of lamellariid species, only based on the vestigial shells, is complicated. Anyway, the shells of the three lots appear to belong to different species. Those of the MNHN lot (stn DC73) are more rounded and with a thicker-walled shell ( Fig.3G, H ). The shell of the MNHN lot(stn DC77) is more elongated and thinner-walled. And the shells of the MNHN lot (stn DC70) are oval, with a wider aperture, and possess delicate transverse undulations on the last whorl. The first indication is that the three lots may represent different species, which only can be defined with additional samples.

Family PEDICULARIIDAE Gray, 1853

Figures

FIG. 3. — Cypraeoideans: A, Erosaria acicularis (Gmelin, 1791), MNHN (1), apertural view (L 23.1 mm); B, same, dorsal view; C, Luria cinerea (Gmelin, 1791), MNHN, stn DC73 (1), apertural view (L 17.0 mm); D, same, dorsal view; E, stn DC75 (1), young specimen, apertural view (L 7.4 mm); F, same, dorsal view; G; Lamellaria sp., MNHN (stn DC73), apertural view (L 3.7 mm); H, same, dorsal view; I, Pedicularia tibia Simone, 2005, MNHN (stn DC73), apertural view (L 3.8 mm); J, same, left view; K, same, right view; L, same, dorsal view; M, Pseudosimnia lacrima n. sp., holotype MNHN 25217, dorsal view (L 7.5 mm); N, same, right view; O, same, apertural view; P, Cleotrivia antillarum (Schilder, 1922), MNHN (stn DC73), apertural view (L 4.5 mm); Q, same, right view; R, same, dorsal view; S, same, MZSP 104031, apertural view (L 4.1 mm); T, same, dorsal view.