A Manual of Conchology / According to the System Laid Down by Lamarck, with the Late Improvements by De Blainville. Exemplified and Arranged for the Use of Students.

by Thomas Wyatt

U. angusta.

U. manca.

U. cariosa.

U. spuria.

U. Australis.

U. anodontina.

U. sub-orbiculata.

U. pictorum. The Painter’s Unio. Pl. [8], fig. 6.

Species oval, not auriculated, strong, anterior side rhomboid and attenuated; the opposite side obtusely acute; the umbones somewhat warted; concentrically wrinkled; covered with a dusky green epidermis.

U. sinuata. The crooked Unio.