330 



PROTOZOOLOGY 



Fig. 151. a, b, Pyxidicula operculata, XSOO (Penard); c, Pseudo- 

 chlamys patella, X330 (Cash); d, e, Difflugiella apiculata, X270 (Cash); 

 f, Cryptodifflxigia ovijormis, X320 (Cash); g, Lesquereusia spiralis, 

 X270 (West); h, Hyalosphenia papilio, X330 (Leidy); i, Corycia coro- 

 nata, Xl70 (Penard); j, Pamphagus rmUabilis, X330 (Leidy); k, Plagi- 

 ophrys parvipunctata, X330 (Penard). 



ish; Diffliigia-like in general appearance, compressed; with or 

 without foreign bodies; pseudopodia long, acutely pointed; fresh 

 water. 



C. oviformis P. (Fig. 151,/). Test ovoid; without foreign bodies; 

 crown hemispherical; aperture truncate; cytoplasm with chloro- 

 phyllous food particles; 16-20/i by 12-15/i; in marshy soil. 



Genus Lesquereusia Schlumberger. Test compressed, oval or 

 globular in profile, narrowed at bent back; semispiral in appear- 

 ance; with curved or comma-shaped rods or with sand-grains (in 

 one species); body does not fill up the test; pseudopodia simple 

 or branched; fresh water. 



L. spiralis (Ehrenberg) (Fig. 151, g). Aperture circular; border 



