FORA H IN IF ERA . 



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

 14) is another example. 



The Foraminifera are nucleated. Diplophrys multiplies 

 by a " process of con- 

 tinuous binary fis- 

 sion." Miliola gives 

 rise to small round, 



sharply - defined bod- 



les, in calcareous 

 shells, with one turn, 

 but no inner Avails, 

 .and with pseudopo- 

 dia like those of the 

 adult. Microgromia so- 

 cialis multiplies by zo- 

 ospores, which are oval, 



With two fiagella ; Or, Fig. 13. A Foraminifer. GMir/emna bullmdes, 

 , -i ,1 magnified 70 diameters. From Mac.allister. 



in other cases, the 



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

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



, ,, , /// pods (HertAvig). 



II 'i j iji, \ Ijl /////. I If 



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



chambers are 

 numerous and 

 regular, the 



shells being flat 

 and consisting 

 of eight coils sit- 

 uated in the 

 same plane. A 

 recent species ot 

 F'o 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- 



