SPECIAL MORPHOLOGY AND TAXONOMY OF SARCODINA 357 



with bristles or ridges, etc., apparently useful in flotation. 

 Globigerina, Orb. (the last greatly swollen chamber includes 

 within it all of the earlier chambers); Hasiigerina, W. 

 Thomp.; The Nummulites group includes more compli- 

 cated types with canal system : Here : Nouionina, d'Orb. ; 

 Polysiomella, Link; OperniUna, d'Orb.; Nummulites, Link; 

 and Amphistigina, d'Orb. 



Sub-class IV. PM(EBMk, BtJTSCHLi. 



Naked forms ; pseudopodia lobopodia or lamel- 



lipodia Order 1. Amcebida 



Testate or membraned forms Order 2. Test ace a 



Order 1. Amcebida, Aut. 

 L Diphasic forms, amoeboid and flagellated 



stages Family 1. Bistadiid^ 



Monophasic forms, amoeboid only 2 



2. Free-living; water, earth, moss, etc 3 



Parasites of cavities and tissues. .Family 2. Endamcebid.e 



3. Without cytoplasmic "Nebenkern" 



Family 3. AMCEBiDyE 

 With cj'toplasmic "Nebenkern" . Family 4. Paramcebid/E 

 Family 1. Bistadiidse, Doflein. 



Two fiagella in flagellated phase Genus Ndgleria 



One flagellum in flagellated phase Genus Craigia 



Three flagella in flagellated phase Genus Trimastigamoeba 



Family 2. EndamcEbidae. 



1. Vegetative forms with one nucleus 2 



Vegetative forms with two nuclei . . . Genus Dientamoeba 



2. Encysted stage with huge glycogen mass 



Genus lodamoeba (Endolimax) 

 Encysted stage without large glycogen mass 3 



3. Reproduction by budding in cells with eight 



nuclei Genus Councilmania (?) 



Reproduction by division Genus Endamoeba 



Family 3. Amoebidse, Doflein. 



L Actively moving forms with lobose pseudo- 

 podia 2 



Sluggish forms; no definite pseudopodia 



Genus Pelomyxa 

 2. Large forms, several pseudopodia. . .Genus Amoeba 

 Small forms moving as one pseudopodium 



Genus Vahlkampfia 

 Family 4. Paramoebidae, Doflein. 



Free living or parasitic, one genus Genus Paramoeba 



Order 2. Testacea, Del. and Her. 



1. Tests sunple; membranous, plastic or rigid 2 

 Tests rigid, with foreign bodies, plates or 



scales 3 



2. Pseudopodia lobose or simply branched 



Family 1. ARCELLiDiE 

 Pseudopodia reticulate, forming a network 



Family 4. Gromiid^ 



