INDEX. 

 ORDER 2. 



BIVALVES. 



GENUS 1. PECTUNCULUS. COCKLE. 



Plate Fis. 

 Pectunclus fasclatut ^ - - • 170 



MULTI VALVES, 



\ GENUS n, BALANUS. ACORN. 



fialanus Tintlnnabulum .... J4S 



