Aclis didyma, E. A. Smith, 1890

Souza, Leonardo Santos De, Araújo, Tarciso Almeida De & Pimenta, Alexandre Dias, 2024, Taxonomic review of Aclis Lóven, 1846 (Gastropoda, Eulimidae) from Brazil with notes on other congeners from the western Atlantic and Saint Helena, Zootaxa 5433 (4), pp. 451-499 : 489

‘Aclis’ didyma E.A. Smith, 1890

Figs 23C, D

Aclis didyma E.A. Smith, 1890: 281, pl. 23, Fig. 30.

Type material. Syntypes: NHMUK 1889.10.1.775–779 [5] .

Type locality. Sanit Helena.

Remarks. Aclis didyma is very similar to ‘ Aclis angulata E. A. Smith, 1890 ’ (see comments above) and has several axial ribs at small intervals in the teleoconch, a feature not known in Aclis . This taxon needs relocation to another group.

Figures

FIGURE 23. Species incorrectly attributed to Aclis. A–B. ‘Aclis’ angulata E.A. Smith, 1890. Syntypes, NHMUK 1889.10.1.762 and 1889.10.1.758, respectively; C–D. ‘Aclis’ didyma E.A. Smith, 1890. Syntypes, NHMUK 1889.10.1.775 and 1889.10.1.779, respectively; E–G. Ebala similima (E.A. Smith, 1890). Syntypes, NHMUK 1889.10.1.768–770; H–I. Graphis cubana (Bartsch, 1911). Holotype, USNM 94290; J–K. Fusceulima immaculata (Dall, 1927). Holotype, USNM 108037; L–M. Melanella limata (Dall, 1927). Holotype, USNM 108044. A, C, E–H, J, L. Shell in frontal view. B, I. Shell in lateral view. K, M. Protoconch in apical view. Scale bars: A–J, L. 1 mm; K, M. 200 μm. Credits: A–G. NHMUK photographic unit; J–M. USNM.