Monography of the family Unionidæ : or, Naiades of Lamarck (fresh water bivalve shells) of North America ... . escription of it. I have figured afine specimen from Mr. Hydes cabinet. This na-turalist observes that the species inhabits Mahoningriver, near Pittsburg, and that of the very manyspecimens he has received, none has perfect beaks. UNIO CATILLUS. Plate XIII.—Fig. Shell oval orbicular, slightly oblique, moderatelythick, convex, dark chestnut-brown, with crowdedwrinkles; anterior margin obtusely rounded or sub-truncated; posterior margin rectilinear, nearly direct,extremit
Monography of the family Unionidæ : or, Naiades of Lamarck (fresh water bivalve shells) of North America ... . escription of it. I have figured afine specimen from Mr. Hydes cabinet. This na-turalist observes that the species inhabits Mahoningriver, near Pittsburg, and that of the very manyspecimens he has received, none has perfect beaks. UNIO CATILLUS. Plate XIII.—Fig. Shell oval orbicular, slightly oblique, moderatelythick, convex, dark chestnut-brown, with crowdedwrinkles; anterior margin obtusely rounded or sub-truncated; posterior margin rectilinear, nearly direct,extremity rounded; umbonial slope rounded; umbonesinflated, narrow, prominent; ligament margin rectili-near, oblique, angular posteriorly; summits slightlyflattened; beaks much incurved, pointed, slightly tu-berculated; lunule short ovate; within rosaceous;cardinal teeth thick, direct, profoundly sulcated; la-teral tooth of the left valve very thick, that of theright valve compressed, and rising from a very broadplate or base projecting on either side; cardinal plateprofoundly dilated. Cab. A. N. S. No. 2103. n. --:?-? „-?- —•- - - . T —;?•
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Keywords: ., bookcentury1800, bookdecade183, booksubjectmollusks, bookyear1836
