INDEX. 



GENUS 11. MYTILUS MUSCLE, 

 FLUVIATILES. RIVER. 









Plate, 



Fig. 



Mytilus Cygneus, great Horse Muscle 



"* 



m 



5i 





MARINE. 



SEA. 









Mytilus curvirostris, wry beak 



. 



• 



40 





Mytilus barbatus, bearded 







70 





PART III. 



GENUS 13. CHAMA. GAPER. 

 MARINE. SEA. 

 Chama magna, large » - * * 58 



GENUS 14. SOLEN. SHEATH OR RAZOR SHELL, 



Solen siliqua. Pod - 46 



Solen ensis. Scymetar - 50 



Solen legumen. Peaseccd - - - 53 



PART IV. 



MULTIVALVES. 

 GENUS 16. PHOLAS. PIDDOCKS. 



Phola3 bifrons, double-fronted 62, 



Phola* parvus — 69 



VOL, II. I 



