232 HANDBOOK OF PROTOZOOLOGY 



Diploclilamys leidyi Greeff (Fig. 92, e). Test dark grey; 

 inner envelope projecting beyond the outer aperture. One to 

 twenty nuclei. Diameter 80 to 100 microns. In mosses. 



Family 2 Allogromiidae Cash and Wailes 



This family is frequently included in the Foraminifera. 



Genus AUogromia Rhumbler. Test a thin chitinoid mem- 

 brane, rather rigid, smooth or slightly coated with extraneous 

 matter; broadly ovoid or spherical; aperture terminal. One or 

 more nuclei. Numerous contractile vacuoles. Pseudopodia are 

 filopodia and numerous, being formed from a short peduncle, 

 branching and anastomosing, with numerous motile granules. 

 Several species in fresh or marine water. 



AUogromia fluvialis (Dujardin). Test spherical or sub- 

 spherical; smooth or sparsely covered with silicious particles. 

 Cytoplasm yellowish, filling the test, with foreign particles; 

 aperture not seen. A single large nucleus and numerous con- 

 tractile vacuoles. Pseudopodia long, anastomosing, often en- 

 veloping the test. 50 to 250 microns long. On aquatic plants, 

 moss, and soil. 



AUogromia ovoidea Rhumbler (Fig. 93, a). In salt water. 



Genus Microgromia Hertwig and Lesser. Test small, 

 hyaline, spherical or pyriform, not compressed; terminal aper- 

 ture circular. Pseudopodia long straight or branching, filose or 

 anastomosing, arising from a peduncle. A single nucleus; one 

 contractile vacuole. Solitary or colonial. 



Microgromia socialis (Archer) (Fig. 93, h). The cytoplasm 

 is bluish in color. A contractile vacuole near the aperture. 

 Pseudopodia arise from a peduncle, attenuate, branching, 

 anastomosing; often connecting numerous individuals into a 

 more or less closely aggregated colony. Multiplication by 

 fission of the body and also by the formation of zoospores. 

 Diameter 25 to 35 microns. Among aquatic vegetation. 



Genus Lieberkiihiiia Claparede and Lachmann. Test 

 ovoidal or spherical, with or without attached foreign par- 

 ticles. Aperture usually single, lateral, or subterminal; flexible. 

 One or more nuclei; numerous contractile vacuoles. Pseudo- 

 podia formed from a long peduncle located in the test, reticu- 

 late, often enveloping the test. 



