INDEX. 



GENUS 7. PECTUNCULUS." COCKLE. 

 • MARINE. SEA. 



Fig. 



GENUS 11. MYTILUS MUSCLE, 



* MARINE. SEA. 



Mytllus Modiolus, great 

 Mytilus difcors, divided 



23 



as 



GENUS 15. PINNA. SEA HAM OR WING 

 # MARINE. SEA. 



Pinna muricata, thorny 



PART IV. 



MULTIVALVES. 



Ealanus vulgaris, common 

 Balanus porcatus, ridged 

 Balanus anatiferus barnacle 

 Vot.I. 



GENUS 18. 



M 



36 



30 



7 



a. 3. 



