BRITISH MOLLUSCA. 
167 
Orbicula Norvegica, Sow. (not Lamk.) Linn. Trans, xiii. 468. 
t. 26. f. 2 ; Sow. Gen. Shells , Orbicula , f. 3, 4, 5 ; Reeve , Conch. 
Syst. 1 . 129. f. 3-5. 
Crania (/3), Schum. Essai , 
Discina Norvegica, Crouch, Introd. Conch . t. 13. f. 2. 
Orbicula striata, Sow. Thes. Conch, i. 366. t. 73. f. 8 ; Forbes fy 
Hanley, Brit. Moll. ii. 368. 
Inhab. ? Found in ballast used to mend roads in the neigh- 
bourhood of London. 
THE END, 
PRINTED BY RICHARD TAYLOR, 
RED LION COURT, FLEET STREET. 
