Monography of the family Unionidæ : or, Naiades of Lamarck (fresh water bivalve shells) of North America ... . / £ saxf-us. Con. ?-. C , (lonrad. 3. Lr. CO (I. 109UNIO SAXEUS, Plate LX.—Fig. Shell obovate, ventricose, rather thin; beaks de-corticated, slightly prominent, summits obtuse; urn-bonial slope subangulated or obtusely rounded;ligament margin elevated, not oblique; posteriormargin obliquely rectilinear or slightly concave;extremity truncated, direct; basal margin regularlyarcuated; epidermis yellowish-brown, rather ob-scurely rayed; within bluish; ca
Monography of the family Unionidæ : or, Naiades of Lamarck (fresh water bivalve shells) of North America ... . / £ saxf-us. Con. ?-. C , (lonrad. 3. Lr. CO (I. 109UNIO SAXEUS, Plate LX.—Fig. Shell obovate, ventricose, rather thin; beaks de-corticated, slightly prominent, summits obtuse; urn-bonial slope subangulated or obtusely rounded;ligament margin elevated, not oblique; posteriormargin obliquely rectilinear or slightly concave;extremity truncated, direct; basal margin regularlyarcuated; epidermis yellowish-brown, rather ob-scurely rayed; within bluish; cardinal teeth direct,compressed; lateral teeth straight. OBSERVATIONS. I found a few individuals of this species in thesummer of 1833 on the shore of the Alabama riverat Claiborne, where there is an indurated calcareousplatform. They were all dead shells; and like itsassociate, U. arctatus, this species I never saw on themuddy shores or gravelly bars. UNIO COLLINUS. Plate LX.—Fig. 3. OBSERVATIONS. Since the publication of this species in a formernumber of this work, I have received a few specimens 110
Size: 1548px × 1614px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade183, booksubjectmollusks, bookyear1836
