PSEUDODIFFLUGIA. 33 



Pamphagus avidus. Body oval or ovoid, in transverse 

 section circular, wider at the oral pole ; mouth small, 

 circular, contractile. Length, 148^ to 220 fj. ; breadth, 

 120//. 



Hob. Cedar swamp. 



GENUS II. PSEUDODIFFLUGIA. 



SYN. : Pseudodifflugia, Schlum. ; Pleurophrys, C. and L. 



Animal provided with a thin, chitinoid shell, usually 

 incorporated with variable proportions of fine quartz 

 sand or other extrinsic material. Mouth terminal, infe- 

 rior. Sarcode usually colorless, with a large, clear nu- 

 cleus, but obscured by the nature of the shell. Pseudo- 

 pods numerous, exceedingly delicate, filamentous and 

 forking at acute angles. 



gradlis. SYN. : P. gradlis, Schlum. ; 

 Pleurophrys spharica, C. andL., H. and L., Schulze; Pleurophrys (?) am- 

 phitremoides, Archer, Schulze ; Pleurophrys (?) fnlva, Archer ; Pleuro- 

 phrys compressa, lageniformis, Schulze ; Pleztrophrys angulata, Meresch- 

 kowsky. 



Shell of variable form, usually spheroidal, ovoidal or 

 oblong oval, and of uniform transverse diameters and 

 straight, but rarely compressed and slightly curved. 

 Mouth terminal, circular ; structure obscurely granular, 

 often with fine sand, and frequently almost entirely com- 

 posed of coarser sand, colorless or brownish. Length, 

 40// to 160/* ; breadth, 20/; to 1(%. 



Hob. Ooze of ponds, ditches, &c. 



