44 BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



PILULINA OVATA, new species. 



Description. — -Test ovate in side view, broadly elliptical or nearly- 

 circular when viewed from the apertural end ; walls very thin, smooth, 

 composed of felted sponge spicules and fine amorphous material; 



44 



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45 



Figs. 44-46.— Pilulina ovata. 44, o, side view of one of the small specimens, X 20; 6, same from 



THE APERTURAL END. 45, A LARGE SPECIMEN FROM THE SIDE. X 12. 40, A PORTION OF THE WALL BY 

 TRANSMITTED LIGHT. X 100. 



