SARCODINA, PROTEOMYXA 181 



and colorless. The filopodia branching, but not anastomosing, 

 may be confined to only a limited part of the body. Sometimes 

 with a gelatinous envelope. There are one to many nuclei. The 

 cyst is covered by a double envelope. Free-living. 



Niiclearia simplex Cienkowski. Uninucleate. 



Nuclearia delicatiila Cienkowski (Fig. 68, c, d). Multi- 

 nucleate; often bacteria adhering to the gelatinous envelope. 



Genus Arachnula Cienkowski. Body irregularly chain-form 

 with filopodia extending from the ends of the branches. Nu- 

 merous nuclei and contractile vacuoles. Feed on diatoms and 

 other microorganisms. 



Arachnula impatiens Cienkowski (Fig. 68, e). 



Genus Chlamydomyxa Archer. The naked body which meas- 

 ures up to 300 microns in diameter, is differentiated into the 

 ectoplasm and endoplasm. The latter is often green-colored due 

 to the presence of green spherules, and contains numerous vesic- 

 ular nuclei and one or two contractile vacuoles. Secretion of 

 a capsule round the body is followed by multiplication of the 

 body into numerous secondary cysts. Cyst wall is cellulose. In 

 Sphagnum swamp. 



Chlamydomyxa montana Lankester (Fig. 68,/). Diameter 20 

 to 300 microns. 



Genus Rhizoplasma Verworn. The body is spherical or 

 sausage-shaped with anastomosing filopodia. The whole is 

 orange-red in color. It contains a few nuclei and is said to 

 measure from 5 to 10 millimeters. Found in Red Sea. Rhizo- 

 plasma kaiseri Verworn. 



Genus Dictomyxa Monticelli. Similar to the above, but 

 pseudopodia are said to be colorless ; also found in salt water. 



References 



Calkins, G. N. 1926 The biology of the Protozoa. Phila- 

 delphia. 



DoFLEiN, F. AND E. Reichenow. 1929 Lehrbuch der Pro- 

 tozoenkunde. Jena. 



KuHN, A. 1926 Morphologic der Tiere in Bildern. H. 2; 

 2 T. Rhizopoden. 



Cash, J. 1905 The British freshwater Rhizopoda and Helio- 

 zoa. Vol. 1. London. 



