OF CONCHOLOGY. 49 



dence is known by a small dimple on 

 the surface. In some places they are 

 used as food. 



The French naturalists have divided 

 the Solens into three distinct genera : 

 Solen, Sanguinalaria, and Corbula. 



In Turton's Linne twenty-three spe- 

 cies are described ; eleven species 

 have been ascertained as British. 



Genus 6th.— TELLINA. Animal 

 a Tethys ; shell bivalve, generally slop- 

 ing on one side ; in the fore-part of 

 one valve a convex, of the other a 

 concave fold ; hinge with usually three 

 teeth, the lateral ones smooth on one 

 side. Ijinn. St/st. 305. Plate 5th, 

 fio;. 6th. 



There are three families of the Tel- 

 linae : ovate and thickish,^ ovate and 

 compressed,^^ suborbicular.^*^ 



Habitation. The Tellinae are found 

 to inhabit the ocean, rivers and lakes. 

 Those of the ocean lie buried in the 

 sludge, near the shore, and make two 



H 



