PLATE XXIT. 



All the figures in this Plate represent casts of tlie interior of Foraminifera of different types, described 

 and figured by Prof. Elireuberg in Lis Memoir ' Ueber ilen Griiusand uud seine Erlauterung des organiscben 

 Lebens/ 



Fig. 



1. — Cast of tbe interior of a Nummuline sbell from 

 the Nummulitic Limestone of Traunstein, and 

 considered by Ehrenberg as representing a 

 new genus, to Mliicb be gives the name 

 Meso2iora. 



2. — Cast of the interior of Orbitoides Fortisii (Prattii), 

 from the Nummulitic Limestone of Traunstein. 



3. — Cast of a portion of the median layer of a 

 similar specimen, showing the connections of 

 its chambers and its annular canals. 



4. — Cast of the central chambers of an organism 

 designated by Ehrenberg Orbitoides javanicus. 



5. — Cast of two of the perijiheral chambers of the 

 same, showing their connections and the inter- 

 septal system of canals. 



N.B. The ijroad bifurcating band by which 

 this figure is crossed pretty certainly represents 



Fig. 



the excavation of some parasitic plant or animal, 



such as has made the irregular canals in fig. 2. 



G. — Cast of two chambers of Nummidina striata, show- 

 ing the forms of their segments and the com- 

 munication between the canal-system of the 

 interseptal spaces and that of the marginal 

 cord. 



7. — Cast of the interior of a Nummuline shell, desig- 

 nated by Ehrenberg Nonionina (?) bavarica, from 

 the Nummulitic Limestone, showing the forms 

 and connections of the chambers, and a portion 

 of the canal-system. 



8. — Casts of (.v) Nodosaria, and (b) Vaginulinu, the 

 latter from the Zeuglodon (Nummulitic) Lime- 

 stone of Alabama. 



<). — Cast of the interior of a Textularia {Gram- 

 mostomum, Ehr.) from the same. 



