TESTACEA 



333 



Fig. 152. a, Leptochlamys ampullacea, x330 (West); b, Cochlio- 

 podium bilimbosum, X670 (Leidy); c, Amphizonella violacea, X270 

 (Greeff); d, Zonomtjxa violacea, X200 (Penard); e, f, Microcorycia 

 flava, X240 (Wailes); g, h, Parviidina cyathus, X500 (Penard); 

 i, Capsellina timida, X270 (Brown); j, Diplochlamys leidyi, X270 

 (Wailes); k, Chlamydophrys stercorea, X670 (Wenyon). 



ture view, semicircular in profile; aperture a long, narrow slit 

 when test is closed, but circular or elliptical when opened; 40-55^ 

 long; in moss. 



Genus Capsellina Penard. Test hyaline, ovoid, membranous; 

 with or without a second outer covering; aperture long slit; a 

 single nucleus; 1 or more contractile vacuoles; filose pseudopodia; 

 fresh water. 



C. timida Brown (Fig. 152, i). Small, ovoid; elhptical in cross- 



