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Autor: McLean
Popis
Type locality: W of Cape Wrangell, Attu Island, Near Ids., Aleutian Is., Alaska (52°50.68 N, 172°23.74 E). 221 m (NMFS 143-200601-118).
Description: Shell, moderately large (to 111 mm, RNC 4156) elongated-pyriform; whorls rounded, suture moderately impressed; white to pinkish, with thin, periostracum yellow-tan. Nucleus eroded, teleconch with 4-5 whorls. Axial sculpture of 13 broad, faint undulations on the upper half of the whorls, obsolete on lower half of body whorl, interspaces somewhat narrower than folds. Axial micro-sculpture of fine, raised, close-set growth lines. Spiral sculpture of numerous low, broad, flat-topped cords, with raised edges (often topped with one to four very fine threads) giving a fine lattice-like appearance where they cross the axial ridges; interspaces one to three times as wide as cords. Aperture less than half of shell height, outer lip slightly thickened, canal short, rather narrow.
Radula: Rachidian tooth about one and one half as wide as long, lateral edges rounded, posterior edge slightly excavated. Lateral teeth large, tricuspid, outer cusp strongly curved, tapering, constricted near base; central and inner cusps conjoined for half their length, central cusp small, slender; inner cusp about three times as large as central cusp, curved, tapering, somewhat more than 1/4 the length of the outer cusp.
Remarks: This species resembles Beringius stanchfieldi n. sp., but differs in the presence of axial undulations on the upper portion of the whorls, as well as the fine, raised axial micro-sculpture. It also resembles "Neoberingius" freilei Dali, 1895, but differs in 1) the pyriform as opposed to fusiform profile, 2) the presence of axial undalations, 3) lacking the regulär bifurcated spiral ribs separated by interspaces of the same width and 4) possessing a lattice-like net-work of raised growth lines, and broad flattened spiral cords with raised edges.
Etymology: Named for the F/V Sea Storm, which collected the holotype.
Distribution: Known so far only from the vicinity of Cape Wrangell, Attu Island, at the western end on the Aleutians (172°23-172°20 E), at depths of 220-240 m.
Habitat: Volcanic sand, gravel and rocks, with a bottom temperature of 4.1°C.
Description: Shell, moderately large (to 111 mm, RNC 4156) elongated-pyriform; whorls rounded, suture moderately impressed; white to pinkish, with thin, periostracum yellow-tan. Nucleus eroded, teleconch with 4-5 whorls. Axial sculpture of 13 broad, faint undulations on the upper half of the whorls, obsolete on lower half of body whorl, interspaces somewhat narrower than folds. Axial micro-sculpture of fine, raised, close-set growth lines. Spiral sculpture of numerous low, broad, flat-topped cords, with raised edges (often topped with one to four very fine threads) giving a fine lattice-like appearance where they cross the axial ridges; interspaces one to three times as wide as cords. Aperture less than half of shell height, outer lip slightly thickened, canal short, rather narrow.
Radula: Rachidian tooth about one and one half as wide as long, lateral edges rounded, posterior edge slightly excavated. Lateral teeth large, tricuspid, outer cusp strongly curved, tapering, constricted near base; central and inner cusps conjoined for half their length, central cusp small, slender; inner cusp about three times as large as central cusp, curved, tapering, somewhat more than 1/4 the length of the outer cusp.
Remarks: This species resembles Beringius stanchfieldi n. sp., but differs in the presence of axial undulations on the upper portion of the whorls, as well as the fine, raised axial micro-sculpture. It also resembles "Neoberingius" freilei Dali, 1895, but differs in 1) the pyriform as opposed to fusiform profile, 2) the presence of axial undalations, 3) lacking the regulär bifurcated spiral ribs separated by interspaces of the same width and 4) possessing a lattice-like net-work of raised growth lines, and broad flattened spiral cords with raised edges.
Etymology: Named for the F/V Sea Storm, which collected the holotype.
Distribution: Known so far only from the vicinity of Cape Wrangell, Attu Island, at the western end on the Aleutians (172°23-172°20 E), at depths of 220-240 m.
Habitat: Volcanic sand, gravel and rocks, with a bottom temperature of 4.1°C.
Mclean, J. H. & Clark, R. N., 2023. Seven new genera and thirty-four new species of buccinoid gastropods (Neogastropoda: Buccinidae) from the Aleutian Islands, Alaska.
Autor: Jan Delsing