tide; of the other valve, with a cavity in the middle 

 and a transverse desply cloven lateral tooth on each 

 side, the segments of which divaricate from the 

 beak. 



L. SQUAMOSUM. Turt. B. p. 62. t. 6./. 1, 2, 3. 

 P.p. 429. SOLEN S. Mont. p. 565. Wood. G. C. 

 p. UQ.D.p. 70. Turt. C. D. p. 164. Pellucid, 

 thin, white, obscurely wrinkled concentrically, punc- 

 tured in a scale-like manner; beak small, pointed; 

 inside glossy, with small longitudinal radiating striae. 

 0,40. . .0,5. Torbay and Tenby. 



L. NITIDUM. Turt. B.p. 63. P.p. 49. Glossy, 

 slightly striated concentrically, not punctured, horn 

 coloured. 0,20... i. Torbay. 



GENUS. GOODALLIA. TURTON. 



Triangular, equivalve, inequilateral, closed : hinge 

 with two teeth in one valve and a triangular cavity 

 between them, in the other valve a single tooth : 

 a lateral simple tooth in each valve on the produced 

 side. 

 G. TRIANGULARIS. Turt. B. p. 77. t. 6./. 14. 



F. p. 429. MACTRA T. Mont. p. 99. t. 3 /. 5. 



D. p. 143. Turt. D. p. 82. Strong, smooth, 



