85 



We hefitate to determine this fhell to be aflua'ly En- 

 glijh, having only found one dead fpecimen in (and at 

 Falmouth, taken from the harbour. 



""^^ 12. 



Cardium fubcordatum antlce muricatum. Walk. Min. ly/z^/Zx. Muricatulum. 



f. ^A.— Adams. Mkrofc. t. 14. f. 44, 



C. with a heart-fhapcd, opaque, white fiiell, margin 

 muricated. 



A microfcopic fpecies, minutely fmall, found at Sheppy 

 idand, not uncommon. 



"^^"^ 13.' 



C. with a thin, fragile, femi-pellucid, orbicular, white Arcuatum. 

 flieli, finely and regularly ftriated tranfverfely in an arcu- Tab. 3. f. 2. 

 ated manner, as if cut with an engraving tool, v. ith a few 

 irregular concentric furrows; not glofly : beak or umbo 

 central, pointed at the apex, and turning to one fide; 

 hinge furnilhed with one primary tooth in each valve; 

 laminated teeth remote: on the fide of the middle tooth 

 a fulcus or groove in which the connefting cartilage is 

 fixed. Infide white, a little glolfy, very concave; mar- 

 gin nightly crenated. Diameter not quite half an inch. 



This fiiell has fomewhat the habit of the Tellina diva- 

 ricata of L i n n ^ u s . 



We found this elegant fpecies in Falmouth harbour, 

 dredged up with fand for manure ; but not common. 



Tellina 



