PIIOLAS.— Plate I. 



Species 3. (Fig. a, b, Mus. Jeffreys, &c.) 



Pholas pahva. Phu. testa breviiisculd, suhcun'.atd, 

 antice laid, aeuminatd, late hianti, costis numerosis 

 crebernme imbricatis radiatd ; medio depresnd, 

 postice suhattenuatd, Imviiisculd, lamind dorsali 

 unicd, angustd, nucleo postice terminali. 



The small Pholas. Shell rather short, rather wedge- 

 shaped, anteriorly wide, acuminated, widely i 



rayed with numerous closely imbricated ribs, de- 

 pressed in the middle, posteriorly subattenuated, 

 rather smooth, dorsal plate single, narrow, nucleus 

 posteriorly terminal. 



Pennant. British Zoology. 



Hah. Great Britain. 



Pound i 

 papyracea. 



the 



iiy with Pholas 



