Musculus niger (J E Gray, 1824)
Mytiloidea : Mytilidae
To size: To 50mm. Shell Structure: Thin but not fragile. Equivalve: Equivalve. Equilateral: Strongly inequilateral beaks close to the anterior margin. Tumidity: Not inflated, umbos low. Outline: Modioliform; ligament margin long, not sloping steeply, angled to posterior dorsal margin; posterior rounded; ventral margin long, more or less straight but often depressed adjacent to non ribbed area; anterior narrow, rounded.
Sculpture: Radially ribbed except for smooth median area; 40-60 narrow, raised posterior riblets all minutely nodulose; interspaces very narrow; 12-15 anterior ribs, the anterior most often faint; Overall with comarginal lines and growth stops. Margin: Finely crenulate where radial ribs meet margin. Ligament: Deeply inset extending for most of the posterior dorsal margin. Hinge: Hinge plate narrow, posterior dysodont teeth obscure, otherwise smooth. Pallial Musculature: Mostly obscure. Periostracum: Yellow-brown to black-chestnut brown, thin, persistent. Colour: Internally white.
Distribution & Ecology
Continental Shelf (to 200m)
Additional Information & Related Species
Mytiloidea : Mytilidae
Listed are literature citing Musculus niger (J E Gray, 1824). Reference containing the species Type Description is highlighted.
Gray J E 1824. Shells. In: Parry W.E. (ed.) Supplement to Appendix, Parry's Voyage for the Discovery of a north-west passage in the years 1819-1820, containing an account of the subjects of Natural History London, John Murray. Appendix 10, Zool: 240-246.
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