Plate 75. 



Fig. 1. Calcarina splengleri, ventral view. X 20. 



2. Calcarina defrancii, ventral view. X 20. 



3. Calcarina baculatus (?), ventral ^dew. X 20. 



4. Calcarina hispida, ventral view. X 15. 



5. Siderolites tctraedra. X 15. 



6. Baculogypsina sphaerulatus. X 20. 

 564 



