DESCRIPTION OF PLATE Yl— Continued. 



Fig, 14. — Trepomonas agilis, Dujarclin. 



a, an Individual seen from in front in the direction of the 

 long axis. 



b, an individual seen from the narrow side. 



c, an individual seen from the broad side. The arrows indicate 

 the direction of the protoplasm- circulation which is, liow- 

 ever, often reversed. 



Fig. 15. — Hexamitus injlatus, Dujardin. 

 Fig. 1G. — Fyramimonas descissa, Perty. 

 Fig. 17. — ChUumonas parameclum, Ehrb. 



a, large variety with two yellowish-brown pigment plates. 



b, hinder end of the same when turned half round on its long 

 axis, so as to show the slightly separated margins of the 

 two pigment plates. 



c to g, colourless variety found in infusions, 

 d to f, three stages in longitudinal fission, 

 g, an individual after treatment with acetic acid. 

 Fig. 18. — Astasia trichophora, Ehrb. 



a, an individual. 



b, anterior end of an individual in the act of taking food. 

 Fig. 19. — Afiisonema acinus, Dujardin. 



a, seen from the back surface. 



b, outline of the body as seen from the narrow side. 



c, another individual less magnified, seen from the back sur- 

 face. 



Fig. 20. — Anisonema sulcatum, Duj. 



a, an individual seen from the back-surface. 



b, c, d, three stages of longitudinal fission. 



e, f, tAVo stages of fission only drawn in outline to show the 

 nucleus as seen in an acetic acid preparation. 

 Fig. 21. — Lophomonas, Stein. 



a, b, Lophomonas Blatfarum, Slein. 



c, d, Lophomonas striata, Biitschii. 

 Fig. 22. — Uvella virescens, Ehrb. 



a, a small colony ; x, a Chlorogonium-like frequent parasite 

 of these colonies. 



b, c, individuals coloured by carmine so as to show the nucleus 

 distinctly. 



d, an individual in the act of fission. 



Fig. 23. — Uroglena vohox,'SA\rh. Agroup of five individuals taken from 

 a colony, amongst them a large one. 



Fig 21. — Unknown flagellate (see p. 99). 



a, flagellate phase. 



b, nuclearia-like Rhizopodous phase. 



Fig. 25. — Flagellum-bearing peculiar ^rhizopod-like organism (seep. 100). 



a, creeping phase. 



b, swimming phase. 

 Fig. 26. — Amoeba Blattce, n. sp, 



a, a medium-sized, uninuclear, very clearly fibrillated speci- 

 men. 



b, nucleus of a large uninuclear specimen; /i,case of the nucleus, 



c, portion of a similar nucleus with a peculiar prolongation. 



d, multinuclear cyst belonging to this species. 



