KONGL. SV. VKT. AIvADEMIENS IIANDLINGAR. BAND. 19. N:0 6. 47 



Length 51 inillim., breadth near aperture 25 millim. 



Several specimens have been found in the Pterygotus beds between the middle 

 and superior limestones at Vattenfallet near Wisby. 



This and the preceding species form a division of their own with two septa on 

 each face and the microscopically minute ornamentation. Among coCval species the 

 Bohemian C. munita is somewhat resemblino-. 



