PROTOZOA 15 
the coast of Sicily. The nummulitic limestone of the Medi- 
terranean basin is composed of the calcareous shells of 
eo 
Fic. 9. 
1. A piece of Nummulitic limestone from 2. Vertical section of Nummulites. 
the Pyrenees, showing Nummulites 38. Orbitoides. 
laid open by fractures through the 
median plane. 
Nummulites, 1 Foraminiferan, which sometimes acquired the 
diameter of a shilling. Other species, such as Fusulina and 
Fic. 10.—Rotalia with pseudopodia extended through the pores of the shell. 
Rotalia (Fig. 10), also took a large share in building up the 
imestones of the Old World. 
