Monography of the family Unionidæ : or, Naiades of Lamarck (fresh water bivalve shells) of North America ... . fte 5L. I | wo Snyri, C. &. U. : Say. 53 nently distinguished by the peculiarity of its paleepidermis. The sexes are well marked by differenceof outline. Not uncommon in the Western rivers, and in BayouTeche, Louisiana, where it is ornamented with palegreen rays. In the Alabama river it is partial to amuddy bed, and rare on the bars. I have figured a specimen in Mr. Poulsons cabinet,brought from the west and labelled by Rafinesque. UNIO SAGERI. Plate XXIX.—Fig. 1. DESCRIPT
Monography of the family Unionidæ : or, Naiades of Lamarck (fresh water bivalve shells) of North America ... . fte 5L. I | wo Snyri, C. &. U. : Say. 53 nently distinguished by the peculiarity of its paleepidermis. The sexes are well marked by differenceof outline. Not uncommon in the Western rivers, and in BayouTeche, Louisiana, where it is ornamented with palegreen rays. In the Alabama river it is partial to amuddy bed, and rare on the bars. I have figured a specimen in Mr. Poulsons cabinet,brought from the west and labelled by Rafinesque. UNIO SAGERI. Plate XXIX.—Fig. 1. DESCRIPTION. Shell narrow—elliptical, moderately thick on theanterior and thin on the posterior side; disks slightlycontracted from beak to base, causing the basal mar-gin to be slightly sinuous; anterior side short, marginregularly rounded; posterior side produced, somewhatpointed, extremely obtuse; ligament margin elevated;umbo not prominent, flattened; umbonial slope round-ed; within bluish-white and iridescent; cardinal toothin the right valve thick, direct, divided at the summitby a deep groove; in the left
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Keywords: ., bookcentury1800, bookdecade183, booksubjectmollusks, bookyear1836
