PLATE LXII. 
. Cryptodiffiugia eboracensis Wailes. (p. 53) Side 
and oral views of active individual. x 1200. 
. Hyalosphenia ovalis Wailes. (p. 55) Broad and 
narrow side views of active individual. x 300. 
. Nebela bigibbosa Penard. (p. 56) Broad and narrow 
side views of empty test. x 300. 
. N. lageniformis var. minor Wailes. (p. 58) Broad 
side view of empty test. x 400. 
. N. tubulata Brown. (p. 58) Broad side view of 
empty test. x 400. 
Heleopera sordida Penard. (p.63) Broad and narrow 
side views of living individual. x 400. 
Averintzia cyclostoma (Penard) Schouteden. (p. 65) 
Broad side view and oral view of empty test. x 240. 
. Cochliopodium obscurum Penard. (p.66) Active indi- 
vidual. x 700. After Penard. 
