Epitonium polacia (Dall, 1889)

Ortega, José Rafael & Gofas, Serge, 2019, The unknown bathyal of the Canaries: new species and new records of deep-sea Mollusca, Zoosystema 41 (26), pp. 513-551 : 528

Epitonium polacia (Dall, 1889) ( Fig. 12 A-E)

MATERIAL EXAMINED. — 17 sh., DW130.

REMARKS

The holotype, collected in 229 fathoms between Florida and Cuba, was figured by Clench & Turner (1952: 316) and measures 7 mm. New to Spanish waters and to the eastern Atlantic. The specific name is of unknown meaning and therefore treated as grammatically invariant.

Figures

FIG. 12. — A-E, Epitonium polacia (Dall, 1889): A, shell from DW130 (4.9 mm height); new to the eastern Atlantic; B, protoconch of the same shell; C, scanning electron micrograph of the same protoconch; D, E, shell from DW130 (4.3 mm height); F, G, Opaliopsis opalina (Dall, 1927): F, shell from DW130 (5.9 mm height); new to the eastern Atlantic; G, protoconch of the same shell; H-K, Epitonium nanum (Jeffreys, 1884), shell from DW130 (2.9 mm height); new to Spanish waters; I, Narrimania concinna (Sykes, 1925), shell from DW130 (4.6 mm height); new to Spanish waters; J, protoconch of the same specimen; K, scanning electron micrograph of the protoconch of a juvenile, live taken specimen, same locality; the arrow points to the protoconch-teleoconch limit. Scale bars: 100 µm.