HIPFONYX 



are known, because those who have picked them from their 

 native rocks, have not taken the pains to observe in what 

 manner they were attached. 



Fig4 1. to 6. The upper valve of Hip' 

 ponyx Cornucopia^ in various stages 

 of growth. 



Tig. 7, Outside of the lower valve. 



Fig. 8. 9. Inside of the lower valve, 

 in different states. 



Fig. 10. 13. Outsides of the upper 



valves of Hipponyx Icevis. 

 Fig. 11. 14. 15. Insides of the same 



valve of the same. 

 Fig. 12. 16. Insides of lower valves 



of Hipponyx l^evis, attached to pof- 



tiona of other shells. 



