PLATE XX. 



FIGS. 



1. Difflugia bacilli/era Penard, (p. 17) Atypical example 

 incrusted with diatoms. Capel Curig, June, 1908. 

 x 280. 



2-5. D. bacillariarum var. elegans (Penard) Cash. (p. 28) 

 Figs. 2-4. Various forms from Delamere, Cheshire, 

 June, 1908. x 340. Fig. 5. An example from 

 Dunham Marsh, 1904. x 280. 



6, 7. D. orbicularis Cash. (p. 38) Fig. 6. Lateral view 

 of a living individual. Fig. 7. Oral view of an 

 empty test. Dunham Marsh, Cheshire. x 400. 

 8-12. D. oviformis Cash. (p. 52) Figs. 8, 9. Lateral and 

 dorsal views of an individual showing the disposition 

 of the pseudopodia when in action. Fig. 10. Mouth 

 and collar of the same. Fig. 11. An individual 

 with a five-lobed mouth. Fig. 12. Mouth and 

 collar of the same. All from Chelford, Cheshire. 

 x 280. 



13, 14. Phryganella acropodia (Hertw. and Less.) Hopk. (p. 

 74) Two individuals in face view, showing variation 

 in size. Dunham Marsh, x 280. 



15, 16. P. paradoxa Penard. (p. 76) Dorsal and lateral 

 views of a living individual found on dripping sand- 

 stone rocks, Baguley, Cheshire, x 280. 



17, 18. Difflugiella apiculata Cash. (p. 78) Dorsal and side 

 views of an active individual from a stream near 

 Barking, Essex, x 400. 



