PLATE XXII. 



FIGS. 

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



views of a living example. In Sphagnum from 



Criccieth, N. Wales, x 280. 

 3-7. D. corona Wallich. (p. 49) Figs. 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. Fig. 11. 



Lateral view of an empty, test. Lindow, Cheshire. 



x 260. 

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



of this species, x 300. 

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



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



