FORAM1NIFERA. 



thrown out in all directions, is a type ; Rotalia veneta (Fig. 

 14) is another example. 



The Foraminifera are nucleated. 

 by a " process of con- 

 tinuous binary fis- 

 sion." Miliola gives 

 rise to small round, 

 sharply - denned bod- 

 ies, in calcareous 

 shells, with one turn, 

 but no inner walls, 

 .and with pseudopo- 

 clia like those of the 

 .adult. Microgromia so- 

 cialis multiplies byzo- 

 ospores, which are oval, 

 with two flagella ; or, 

 in other cases, the 



multiplies 



Fig. 13. A Foraminifer. Globigerina bulloide-s, 

 magnified 70 diameters. From Macallister. 



young assume an actinophrys-like form, and move about by 

 the aid of three or four more or less branched pointed pseudo- 



pods (Hertwig). 



In some forms, 



[ j '$'?>!' f J ' * S / / 



ni / i ' 



NummultteS) the 

 chambers are 

 numerous and 

 regular, the 



shells being flat 

 and consisting 

 of eight coils sit- 

 uated in the 

 same plane. A 

 recent species of 

 Fo rami n i fer 

 found at Borneo 

 measures more 

 than two inches 

 in diameter, while a common form on the Florida reefs, de- 

 voured in large quantities by the Holothuria, or sea-cucum- 



Fig. 14. Eotalia. A Rhizopod, showing the pseudopodia. 



