Luria cinerea ( Gmelin, 1791 )

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

Luria cinerea ( Gmelin, 1791)

( Fig. 3 C-F)

Synonymy: see Simone (2004: 52). Complement: Luria cinerea – Simone 2004: 52-57, figs 13-15, 74, 75, 187-204, colour plates 46, 67-69.

Cypraea (Luria) cinerea – Rios 2009: 133, fig. 315.

MATERIAL EXAMINED. — Brazil, Espírito Santo, off Itaúnas, continental slope of Abrolhos, 18°59’S, 37°48’W, 607-620 m depth, MNHN, 13 shells ( Fig. 3C, D ), MZSP 104061, 4 shells ( MD 55, stn DC 73, Bouchet, Leal & Métivier coll., 27. V.1987). — 18°59’S, 37°50’W, 295 m depth, MNHN, 5 shells ( Fig. 3E, F ) (stn DC 75). — Off Regência, 19°40’S, 37°48’W, 790-940 m depth, MNHN, 3 shells (stn CB 77).

MEASUREMENTS (in mm). — MNHN (stn DC73): 17.0 × 10.3; MNHN (stn DC75): 7.4 × 3.6.

DISCUSSION ON CYPRAEIDS

A complete taxonomical treatment of Erosaria acicularis and Luria cinerea is given elsewhere( Simone 2004).In that paper,the deepest samples examined were collected in 81 m and 97 m depth respectively, although they are only constituted of shells. Reports up to 100 m have been found in literature (e.g., Rios2009).Despite this, these species are far more common subtidal, up to c. 20 m depth, where they have been live collected. The presently studied samples appear to be the deepest ever collected for both species. Erosaria acicularis had been found in 607-620 m depth ( Fig. 3A, B ), while L. cinerea from 295 to 940m depth ( Fig. 3C, D ). The conditions and state of preservation of these studied samples, however, are more indicative of transportation. As the oceanic topology of that region is rather abrupt, it is a quite possible that those samples are the result of the slide of dead shells from shallower depths. Those shells from the above illustrations are the best preserved ones, even though they are yet considerably eroded. Interestingly, the lot MNHN (stn DC75) are only constituted of shells of young, fragile specimens ( Fig. 3E, F ).

Family LAMELLARIIDAE d’Orbigny, 1841

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.