71 



by the fide of the teeth in each valve, running from the 

 umbo, into which the conneclinij cartilage is fixed. 



This fpecies is not in general gloffy in a recent flate, 

 and mod commonly has the ftrice interfperfed with a few 

 antiquated ridges. Diameter three quarters of an inch. 

 It is found on many parts of the coaft, chiefly in bays and 

 inlets. We have met with it fparingly at Falmouth, about 

 Kings/bridge in Devonjhire, at Fooie in DorfetJJiire, and 

 have received it from Kent: but it does not appear to be 

 common any where, and live fiiells are very rare. 



15. 



Tellina undata. Pult. Cat. Dorfet. p. 30? Rotundata. 



Tab. 2. f 

 T. with a thin, fub-pellucid, orbicular, white fliell, ra- 

 ther convex, wrought with fine (almoft obfolete) ftrias 

 concentrically; moderately gloffy: tcmbo fmall, rather 

 prominent, and turned to one fide, placed near the mid- 

 dle : teeth two in each valve, one of which is bifid, the 

 other a little diverging. Infide fmooth, gloffy white. 

 This fpecies varies a little in fhape, in fome the front 

 margin is a little ftraitened, and makes one end rather 

 fmaller than the other, in which cafe the breadth rather 

 exceeds the length. Its largeft diameter is feldom more 

 than an inch, and few equal that fize. 



This fhell has much the habit of the Venus undata, and 

 may readily be confounded with it ; the material diftinfti- 



on 



J. 



