CO^CHYLlk—DITHYKA. 27. M7 



Shell an inch long, and three quarters of an inch broad, 

 roundish-angular, finely and regularly striate transversely, and 

 longitudinally in a very minute manner, of a rosy-white color 

 botlj inside and out, deeper towards the hinge. 



Tellina testd otato-trigond, transversim striolatd, calvis '^g 



bidentatis, alterd lateralibns. 

 Shell oval-triangular, irregularly striate transversely, each valve 



with two teeth, and one of them with lateral teeth. 

 Tellina tenuis. Da Costa, Brit. Conch, p. 210. 



Chemnitz, vi. p. 124, tab. 12, fig. 117. 



Donovan, i. tab. 19, three lower figures. 



Pennant, Brit. Zool. iv. p. 180, tab. 51, fig. 2. 



Montagu, Test. Brit. p. 59. 



JLinn. Trans, viii. p. 52. 



Turton, British Fauna, p. 150. 



Dorset Catal. p. 30, tab. 5, fig. 3. 



Wood, Conch, p. 155, tab. 44, fig. 3 and 4. 



Turton, Conch. Diet. p. 169. 

 Tellina balaustina. Dillwyn, Descript. Catal. p. 93. 

 Tellina Isevis. Lister, Conch, tab. 405, fig. 251. 

 Mus. nost. Common on all shores. 



Shell about half an inch long, and three quarters of an inch 

 broad, very flat thin and glossy, a little angular at one end, and 

 rather pointed at the other, of various colors and shades, often 

 banded. 



There may be frequently observed some very minute and fine 

 longitudinal white lines, from which circumstance it has beeis 



p 2 



teuuis. 



