PLATE L 



CEPHALOPODA. 

 Belemnitella mucronata. 



Fig. 16. View of the internal shell. Page 22 



Sepia officiiialis. LINNE. 



Fig. 12. View of a specimen. Page 22 



a. Arms. 



b. Tentacles. 



c. Eyes. 



Nautilus pompilius. 



Fig. 24. View of the animal and shell, the latter sawed through 



the middle. Page 22 



a a. Air chambers. 

 b b. Septa. 

 c c. Siphuncle. 



Goniatites henslowi. 

 Fig. 18. View of a specimen, the outer shell entirely removed. Page 22 



CeratitCS IlOdoSUS. BRUGUIKRK. 



Fig. 19. View of a specimen, outer shell entirely removed. Page 22 



