T. capsoides. T. exilis. T. donacina. T. nitida. T. scalaris. T. psammotella. T. striatula. T. scobinata. T. decussata. T. Brasiliana. T. obliqua. T. umbonella. T. deltoidalis. T. nymphalis. T. solidula. T. bimaculata. T. sexradiata. T. ostracea. _T. radiata._ The radiated Tellen. Pl. 8, fig. 5. Shell elongated; posterior side shorter and more narrow than the anterior. _T. foliacea._ The foliaceous Tellen. Species transversely oblong; upon the edge of the front side of either valve are rows of serrated teeth, running from the apex to the margin. _T. bimaculata._ The double-spotted Tellen. Species orbicular, easily known by answering to its common name. _T. fabula._ The false Tellen. Shell very thin, pellucid, and oval; yellowish colour, darker towards the umbo, which is nearly central, pointed and turned a little to one side; anterior side slopes to an obtuse point; posterior side large and rounded; hinge with three teeth in one valve and two in the other. _T. scobinata._ The rasp Tellen. Species oval or sub-orbicular, sub-equilateral. _T. donacina._ The Donax-like Tellen. Pl. 9, fig. 5. Sub-oval, flattish, semi-striated and semipellucid; hinge with two teeth in one valve and one in the other; pale yellow, radiated longitudinally with pink. _T. depressa._ The depressed Tellen. Oval, flat, pointed at the smaller end and slightly reflected; pale yellowish colour, faintly striated concentrically; covered with a pale brown epidermis. 5. Tellinides. One species. Though this genus bears a great affinity to many others, it cannot be united with any; having lateral teeth, it differs from the Psammobia; by not having the valves twisted, it differs from the Tellina; the valves closing, and having muscular impressions in the interior, render it distinct from the Lucina. Shell equilateral, rather elongated, almost without the flexuous plait; two cardinal teeth diverging, and two remote lateral teeth, of which the anterior is but little distant from the summit. _T. Timorensis._ The Tellinides of Timor. Pl. 8, fig. 3. The only type and species of this genus. 6. Corbis. One species. This genus was at first classed by Lamarck with the Lucina; but Cuvier, having discovered that the organization of the animals differed, made this a distinct genus, which was adopted by Lamarck.