96 CONCHYLIA— i>;77/y/x'J. 2('.. 



Shell three quarters of an inch long, and rather more in breadth, 

 thick, conveXj of an angular roundish shape, generally of a dull red 

 color both outside and inside, with usually transverse zones of diifer- 

 ent hues, rarely of an uniform yellow or white : beaks nearly cen- 

 tral, with two small blunt teeth in each valve. 



pcilvouiui. PsAMMOBiA tcstd suborbicuUtri, striis transversis longitudinnlibusque 

 minutis, latere antico subangulato, margine subundato. 

 Shell somewhat orbicular, with transverse and minute longitudi- 

 nal striae, somewhat angular at the anterior side, and undulate at 

 the margin. 

 Tclliua polygona. Montagu, Supjil. p. 27, tab. 28, fig. 4. 

 Pennant, Brit. Zool. iv. p. 185. 

 Wood, Conch, p. lt»0. 

 Turton, Conch. Diet. p. 180. 

 Tellina Guinaica. DUlwyn, Descript. Catal. p. 96. 



Chemnitz, x. p. 348, tab. 170, fig. 1651-53. 

 Found by Captain Laskey, in the Frith of Forth. 



Shell half an inch long, and rather more in breadth, dirty white, 

 somewhat truncate and angular at one end and rounded at the 

 other, with fine transverse striae and minute longitudinal ones : the 

 margin uneven: beaks not quite central; in one valve two large 

 distant teeth, in the other a large cloven triangular tooth and a 

 small one near it. 



