MORPHOLOGY AX I) TAXONOMY OF THE SARCODINA 4<b 



Family 3. Amoebidae Doflein. 



3. Hody discoidal with short conical pseudo- 



podia Genus Dactylosphaerium 



Hertwig and Less. 

 Body ameboid with large lobose pseudo- 

 podia Genus Amoeba Ehr. 



4. Endosome divides without fragmenting 



Genus Vahlkampfia Chatton and 

 Lalung-Bonnaire 

 Endosome fragments forming typical 



spindle ' Genus Hartmannella Alexeieff 



Family 4. Sporamoebidae Chatton. 



One genus and species Genus Pansporella Chatton 



Family 5. Paramoebidae Doflein. 



Free-living or parasitic, one genus . - .Genus Paramoeba Schaudinn 



Order II. Testacea M. Schultze. 



1. Testssimple; membranous, plastic or rigid . 2 

 Tests rigid, with foreign bodies, plates or 



scales 3 



2. Pseudopodia lobose or simply branched 



Family 1 . Aecellidae 

 Pseudopodia reticulate, forming a network 



Family 4. ( Iromiidae 



3. Glutinous test covered by foreign bodies 



Family 2. Difflugiidae 

 Chitinous test with plates made by organ- 

 ism family 3. EuGLYPHIDAE 



Family 1. Arcellidae Schultze. 



1. Tests membranous and flexible 2 



Tests membranous; rigid; with or without 



foreign bodies 9 



2. Test like inverted watch-glass; aperture 



full diameter 3 



Test cup-like or sac-like 1 



3. Test with hyaline margin (Fig. L88) ( lenus Pseudochlamys 



Clap, and Lachm. 

 Tests completely hyaline Genus Pyxidicula Ehr. 



4. Tests cup-like 5 



Test bag or sac-like 7 



.">. Margin of test aperture turned in •'• 



Test aperture with diaphragm-like mem- 

 brane < ienus Diplochlamys < rreeff 



6. Cell body uninucleate (Rhogostoma) (ienus Amphizonella Greeff 

 Body with more than one nucleus, .(ienus Zonomyxa Nusslin 



7. Crown of test with circular and radial 



ridges < Ienus Microcorycia Cockerel! 



Crown of test simple; aperture an elastic 

 slit 8 



8. Test non-encrusted ovoid sac; aperture 



linear Genus Capsellina Penard 



Test sac-like, covered with foreign bodies 



( ienus Parmulina Penard 



