SOILS AND MOSSES OF SPITSBEfiGEN. 475 
(29) ScouRFiBLD, D. J. 1897. — Contributions to tlie Non-marine Fauna of Spitsbergen. 
I. Rhizopoda. Proc. Zdol. Soc. xlv. 
(30) Senn, G. 1900. — Flagellata iuEnglerandPrantl's 'Dienatiirliclien Pfianzenfamilieu,' 
I. Abt. 1 b. Leipzig'. 
(31) Stkin, F. von. 1859-1883. — Der Organismua der Infusioiistliiere. Leipzig. 
(32) Wailbs, G. H. 1912. — Freshwater Rhizopoda and Heliozoa from the States of i^ew 
Yorli, etc. J. Linn. Soc, Zool. xxxii. 
(33) Walton, J. 1933. — A Spitsbergen Salt-marsh. Journ. Ecol. x. 
(34) Wilson, C. W. 1916.— On tlie Life-history of a Soil Amceba. Univ. Cal. Publ., 
Zool. vol. xvi. 
(35) Woodcock, H. M. 1S96. — Observations on Coprozoio Flagellates. Phil. Trans. B, 
vol. -207. 
(36) Woodcock, H. M., & Lapaoe, G. 1915. — Observations on the Life-cycle of a new 
Flagellate. Proc. Roy. Soc. B, vol. Ixxxviii. 
(37) ZscHOCKE, F. 1900. — Die Tierwelt der Ilochgebirgsseen. Neue Deuksch. d. allg. 
schweiz. Gesells., 1900. 
EXPLANATION OF PLATE 24. 
All the specimens were fixed in Schaudinn'a alcoholic sublimate -|- 6 per cent, acetic 
acid and stained in Heidenhain's hEematoxylin. The figures were drawn with the camera 
lucida and a Zeiss 1/12" objective and are X 5000, except tig. 15 which is X 2500. 
Figs. 1-3.- Sainuuron mikroteron, typical forms. 
4,5. ,, „ sessile forms with ingested food bodies. 
Fig. 6. „ „ cyst. 
7. Sainouron oxu, typical active form. 
8. „ „ showing plastic beak. 
9. „ ,, beak withdrawn. 
10. „ „ cyst. 
Figs. 11, 12. Allantion tachyploon. 
Fig. 13. Anisonema minus. 
Figs. 14, 16. Phalansterium solitarium. 
In fig. 15 only the thickened basal part of the flagellum is shown. 
