Monography of the family Unionidæ : or, Naiades of Lamarck (fresh water bivalve shells) of North America ... . 1. Unto ,C Z. ,C 61 with interrupted undulations; concentric lines promi-nent; epidermis dark olive, obscurely rayed, wrinkledon the margins; cardinal teeth double in both valves,slightly compressed, oblique, striated; nacre varyingfrom bluish white to deep salmon or purple; cavitymost capacious under the umbonial slope. SYNONYMES. U. lienosus, Nob. Sillimans Journal, vol. xxv. p. 339, pi. 1, fig. Nashvillianus, Lea. Trans. Amer. Phil. Soc, (new series
Monography of the family Unionidæ : or, Naiades of Lamarck (fresh water bivalve shells) of North America ... . 1. Unto ,C Z. ,C 61 with interrupted undulations; concentric lines promi-nent; epidermis dark olive, obscurely rayed, wrinkledon the margins; cardinal teeth double in both valves,slightly compressed, oblique, striated; nacre varyingfrom bluish white to deep salmon or purple; cavitymost capacious under the umbonial slope. SYNONYMES. U. lienosus, Nob. Sillimans Journal, vol. xxv. p. 339, pi. 1, fig. Nashvillianus, Lea. Trans. Amer. Phil. Soc, (new series,) vol. v. p. 100, pi. xiv. fig. Ji. N. S. No. 20407. OBSERVATIONS. This shell is remarkable for inhabiting exclusivelythe small streams, and is common in Greene county,Alabama. It is a variable species, sometimes noteasily recognised, and the sexual distinctions are asobvious as in U. siliquoideus. The colour of the in-terior is remarkably inconstant, but a purple ap-proaching to salmon is the most prevailing tint, andthe margin is bluish-white. The affinities are , Barnes, and V. glans,
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Keywords: ., bookcentury1800, bookdecade183, booksubjectmollusks, bookyear1836
