Monography of the family Unionidæ : or, Naiades of Lamarck (fresh water bivalve shells) of North America ... . a native of South Carolina,* and wassent to me by Professor Vanuxem, who obtained itfrom the North Fork of the Holston river. Dr. William Blanding presented me with specimensfrom Nollichucky river, Tennessee, the largest ofwhich is nearly destitute of the posterior ribs. Ifound a few dead shells on the bank of Elk river,near the muscle shoals, Alabama. UNIO ACUTISSIMUS. Plate XLVIL—Fig. 2. DESCRIPTION. Shell narrow-elliptical; posterior side produced,gradually narrowed to a point; val
Monography of the family Unionidæ : or, Naiades of Lamarck (fresh water bivalve shells) of North America ... . a native of South Carolina,* and wassent to me by Professor Vanuxem, who obtained itfrom the North Fork of the Holston river. Dr. William Blanding presented me with specimensfrom Nollichucky river, Tennessee, the largest ofwhich is nearly destitute of the posterior ribs. Ifound a few dead shells on the bank of Elk river,near the muscle shoals, Alabama. UNIO ACUTISSIMUS. Plate XLVIL—Fig. 2. DESCRIPTION. Shell narrow-elliptical; posterior side produced,gradually narrowed to a point; valves thin; posteriorside with parallel furrows extending from the umbo-nial slope to base; posterior slope with slightly arcuateribs and furrows; umbonial slope carinated; beaksnot elevated above the dorsal line; epidermis yellow-ish, with green dotted rays; within yellowish, highlypolished, exhibiting the ribs of the exterior. SYNONYME. U. AcuTissiMirs, Lea. Trans. Amer. Phil. Soc, new series, vol. iv. p. 89, pi. x. fig. S.,No. 20418. *Mr. Vanuxem informs me that he found it in Virginia. AT. •
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Keywords: ., bookcentury1800, bookdecade183, booksubjectmollusks, bookyear1836
