Profil taxonu
Obrázky
Autor: Mclean, J. H. & Clark, R. N.
Popis
Type locality: S of Tanaga, Andreanof Ids., Aleutian Is., Alaska (51°47.52 N, 178°10.2 W), 146 m (NMFS 95- 199401-122). Type material: Holotype, SBMNH 169011, 61.8 mm. (leg. William C. Flerx, 6 July, 1994);
Description: Shell relatively small (Height to 75 mm, SBMNH 169012) fusiform, usually slightly concave on shoulder color white or light reddish brown, with narrow white band at mid-whorl; periostracum extremely thin or absent. Whorls rounded, suture weakly impressed, axial sculpture absent, spiral sculpture absent or only very faintly indicated. Protoconch small, smooth, with 2.5 whorls, teleconch with four whorls; Aperture oval, less than half of shell height; canal short, broadly notched; operculum large, but not filling aperture. Radula: Rachidian tooth broad, rectangular, anteriorly edge broadly indented and bearing a thickened ridge; posterior edge with four very small, subequal cusps. Lateral teeth tricuspid, outer cusp long, thick, strongly curved, very slightly recurved at tip; central cusp considerably shorter; inner cusp about one third longer and nearly twice as thick as inner cusp. Remarks: Originally thought to be the enigmatic "Volutopsius" callorhinus Dall. 1877, based on a broken and badly eroded shell found near the Pribilof Islands. That species is now placed in the genus Anomalisipho Dautzenberg & Fischer, 1912 (Merkuljev, 2015; Clark, 2016). "Volutopsius" callorhinus is presently considered to be a synonym of Anomalisipho rodgersi (Gould, 1860), characterized by very fine spiral sculpture, ranges from the Pribilof Islands, Bering Sea, Alaska, north to near Barrow, Alaska, in the Chukchi Sea (Arctic Ocean). It is not present in the Aleutian Islands. Etymology: The name honors Robin C. Harrison, Fisheries Biologist National Marine Fisheries Service (Alaska Fisheries Science Center) retired. Distribution: Found all along the Aleutians, from Stalemate Bank, W of Attu Island, Near Ids. (170°58.73 E) East to the Trinity Islands, SW of Kodiak Island (156°35.5 W) in the western Gulf of Alaska, at depths of 87-330 m. Habitat: Found on bedrock, cobbles, gravel and black sand with bottom temperatures of 3.5°-5.6°C.
Description: Shell relatively small (Height to 75 mm, SBMNH 169012) fusiform, usually slightly concave on shoulder color white or light reddish brown, with narrow white band at mid-whorl; periostracum extremely thin or absent. Whorls rounded, suture weakly impressed, axial sculpture absent, spiral sculpture absent or only very faintly indicated. Protoconch small, smooth, with 2.5 whorls, teleconch with four whorls; Aperture oval, less than half of shell height; canal short, broadly notched; operculum large, but not filling aperture. Radula: Rachidian tooth broad, rectangular, anteriorly edge broadly indented and bearing a thickened ridge; posterior edge with four very small, subequal cusps. Lateral teeth tricuspid, outer cusp long, thick, strongly curved, very slightly recurved at tip; central cusp considerably shorter; inner cusp about one third longer and nearly twice as thick as inner cusp. Remarks: Originally thought to be the enigmatic "Volutopsius" callorhinus Dall. 1877, based on a broken and badly eroded shell found near the Pribilof Islands. That species is now placed in the genus Anomalisipho Dautzenberg & Fischer, 1912 (Merkuljev, 2015; Clark, 2016). "Volutopsius" callorhinus is presently considered to be a synonym of Anomalisipho rodgersi (Gould, 1860), characterized by very fine spiral sculpture, ranges from the Pribilof Islands, Bering Sea, Alaska, north to near Barrow, Alaska, in the Chukchi Sea (Arctic Ocean). It is not present in the Aleutian Islands. Etymology: The name honors Robin C. Harrison, Fisheries Biologist National Marine Fisheries Service (Alaska Fisheries Science Center) retired. Distribution: Found all along the Aleutians, from Stalemate Bank, W of Attu Island, Near Ids. (170°58.73 E) East to the Trinity Islands, SW of Kodiak Island (156°35.5 W) in the western Gulf of Alaska, at depths of 87-330 m. Habitat: Found on bedrock, cobbles, gravel and black sand with bottom temperatures of 3.5°-5.6°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