BIVALVES. — TELLINA. 



41 



American and Atlantic Oceans produce a great number. 

 The rivers, pools, ponds, and marshes of Europe and 

 America supply only a few. The finest varieties are 

 found in the pearl fisheries of Ceylon. 



TELLINA.— re^/ew. 



Division I. — Ovate and thicldsh. 



Gargadia — Toothed. 

 Rugosa — Wrinkled. 

 Lingua-fells — Cafs tongue. 

 Marginalis — Margined. 

 Vlrgata — Tulip. 

 Interrupta — Freckled. 

 Angulata — Angular. 



Inflata — Inflated. 

 Polygona — Polygonal. 

 Lacunosa — Marshy. 

 Gibbosa — Gibbous. 

 Garl — Varying. 

 •Ferroensls — Carnation, 

 *Fragills— i?ri«/e. 



Obliqua — Oblique. 

 Division II. — Ovate and compressed. 



Triangularis — Triangular. 

 Oblonga — Oblong. 

 Spengleri — Sperigler's. 

 Foliacea — Golden . 

 Acuta — Sharp-edged. 

 *Planata — Substriated. 

 Strigosa — Striped. 

 Laevigata — Smooth. 

 Madagascariensls— Mac?a^ascar. 

 Radlata — Radiated. 

 Pallescens — Pale. 

 Rostrata — Beaked. 

 Rufescens — Reddish. 

 Flavescens — Yellow. 

 H y all n a — G lassy. 

 *Inaequivalvls — Inequivalve. 

 *Trifasciata — Three-banded. 



Cocclnea — Scarlet. 

 Incarnata — Flesh-colour' d. 

 Opalina — Opaline. 

 Lanceolata — Lance-shaped. 

 Sanguinea — Sanguineous, 

 Nlvea — Snowy. 

 Sulcata — Sulcated. 

 Donacina — Donax. 

 *Angusta — Narrow. 

 Truncata — Truncated. 

 *Punicea — Flat-striated, 

 *Depressa — Depressed. 

 ♦Fabula — Semi- striated. 

 *Tenn\s— Thin. 

 Vitrea — Transparent. 

 ♦Striata — Striated. 

 Balaustlna — Pomegranate. 

 Calcarea — Chalky, 



