LIN. 



XXVI. Murex. 



XXVII. Trochus. 



XXVIII. Turbo. 



XXIX. Helix. 



1 Plate 3- fig. 2. 

 5 Plate 6. fig.5. 

 9 Plate 4. fig. 3. 

 13 Plate 5. fig. 8. 



17 Pla 



