SPECIAL MORPHOLOGY^ AND TAXONOMY OF SARCODINA 359 



10. Test symmetrical 11 



Test asymmetrical (one species encrusted) 



Genus Lesquereusia 



11. Tests circular in cross-section 12 



Tests ellipsoidal in cross-section 15 



12. Free living forms 13 



Parasitic form (Fig. 154) Genus Chlamydophrys 



13. Pseudopodia lobose 14 



Pseudopodia short lobose with aciculate tip 



Genus Difflugiella 



•x 



^^■--.-■■■^ -^ ^^ if"^vi;r-% %. <..:\ 



■^•^ ■:::^- ..:^^^ ^.-V / * /?V>>-# IWX'^NX 



>•■■' .■'^"^' / 1\HY I \^^ n\\ '^'\\ 



/ /' ' / ;y ! t ^^ ■ • \ 



/ i I ' 



Fig. 154. — Chkunydophri/s stercorea. (From Doflein after Schaudinn.) 



14. Aperture of test with inturned margin 



Genus Arcella 

 Margin not inturned; one lobose pseudo- 

 podium Genus Lejytochlamys 



15. Tests yellow or brown; minute; without 



pits Genus Cryptodifflugia 



Tests hyaline; transparent; usually with 



pits Genus Hyalosphenia 



Family 2. Difflugiidse. 



1 . Test circular in cross-section 2 



Test ellipsoidal in cross-section (com- 

 pressed) 6 



