PLATE XXII. 



Fias. 



1, 2. Difflugia gramen Penard. (p. 48) Lateral and oral 

 views of a living example. In Sphagnum froni 

 Criccietli, N. Wales, x 280. 

 3-7. D. corona Wallich. (p. 49) Pigs. 3, 4. — Lateral and 

 dorsal views of a living individual, the pseudopodia 

 in action in the dorsal view seen by focussing down. 

 Figs. 5, 6. — Oral views of empty tests, one with a 

 thirteen-lobed and the other with a ten-lobed mouth. 

 Fig. 7. — Upper portion of side view of the latter 

 showing three short spines. All from Richmond 

 Park, Surrey. x 260. 

 8-11. D. arcula Leidy. (p. 53) Figs. 8-10. — Oral views 

 showing variations in form of mouth. Pig. 11. — 

 Lateral view of an empty test. Lindow, Cheshire. 

 X 260. 

 12-14. D. cnnstricta (Ehrenb.) Leidy. (p. 54) Various forms 

 of this species, x 300. 

 15. Lesquereusia modesta Rhumbl. (p. 70) Outline of a 

 typical test. Pond at Chipperfield, Herts, x 280. 



