PLATE XLIII. 



FIGS. 



1. Assulina seminulum var. scandinavica Penard. (p. 54) 



x 300. 



2-6. A. muscorum Greeff. (p. 55) Fig. 2. x 800. Fig. 3. 

 Portion of test, x 1200. Figs. 4-6. Broad and 

 vertical views of active individuals. After Cash, 

 x 500. 



7-10. Sphenoderia fissirostris Penard. (p. 60) Fig. 7. An 

 active individual. Figs. 8-10. Empty tests, x 

 600.' 



11-13. S. macrolepis Leidy. (p. 62) Figs. 11-12. Broad 

 and narrow views of empty test. Fig. 13. Broad 

 view of active individual. x 500. 

 14,15. S. dentata Penard. (p. 63) x 600. 



