PLATE LXIL 



FIGS. 

 1,2. Cryptodifflugia eboracensis Wailes. (p. 53) Side 



and oral views of active individual. x 1200. 

 3, 4. Hyalosphenia ovalis Wailes. (p. 55) Broad and 



narrow side views of active individual. x 300. 

 5, 6. Nebela bigibbosa Penard. (p. 56) Broad and narrow 



side views of empty test, x 300. 

 7, 8. N. lageniformis var. minor Wailes. (p. 58) Broad 



side view of empty test. x 400. 

 9. N. tubulata Brown, (p. 58) Broad side view of 



empty test. x 400. 

 10, 1 1 . Heleopera sordida Penard. (p. 63) Broad and narrow 



side views of living individual. x 400. 



12, 13. Averintzia cyclostoma (Penard) Schouteden. (p. 65) 

 Broadside view and oral view of empty test, x 240. 

 14. Cochliopodium obscurum Penard. (p. 66) Active indi- 

 vidual, x 700. After Penard. 



