186 



PEOTOZOA. 



size, occasionally tougher slender processes without granule streams 

 (figs. 125 and 126). 



Amoeba princeps Ehrbg., A. terricola Greet"., Petalc>i/u.s di&ugiens Clap. 

 Lachm. Here should also be placed the famous BathyMus SaecTteli Huxl., 

 which is found in the' deep sea mud of the Atlantic Ocean, if it is indeed a 

 living organism (and not simply a deposit of Gypsum). 



Arcella vulgaris Ehrbg., Difflugia proteiformis Ehrbg., Euglyplia globosa 

 Cart, have shells and tough, pointed, dichotomously branching pseudopodia 

 (fig. 125). 



FIG. 12i. Nunmmlitic Limestone, with 

 horizontal section of N. distant (after 

 Zittell). 



FIG. 12P. 

 ollonga (after Steiu). 



v FIG. 125. Euglypla globe fa 

 (after Hei twig and Lessei ). 



FIG. 127. Acervulina ghboxa 

 (alter M. Schultze). 



2. Sub-order : Reticularia (Thalamophora). Principally marine 

 Rhizopods with extremely slender anastomosing pseudopodia, with 

 granule streams in the latter, rarely naked (Protogenes, Lieber- 

 kuhnia), usually with membranous or calcareous shell, which is 

 single-chambered (Monolhalamia) or many-chi-'mbered (Polythalamid) 

 (fig. 127). 



