FLAGELLATA — CLASSIFICATION 



A. Flagcllum 1. 



(«) No anterior ])rucess : ol'ten ]lara.'^itic . . Oikomoxadidak 



Oikomonas K. (Figs. 37, 2, S) ; Trijimnosoma Ch'iiljy (Fig. 39, a-f) ; 

 Treponema Vuill. (Fig. 39, y-i). 

 (b) Anterior ^jrocet^s unilateral or iiroboscidiforni : cell often tliecate 



BiCOECIDAE 



Bicoeca Clark ; Poteriodaidron St. 

 ic) Anterior process a funnel, surrounding the base of the flagelluni : 

 cells often tliecate. 

 (i.) Funnel free .... Craspedomonadidae 



Codo.mja Clark ; Alonosiga CI. ; J'olyocca Kent ; Protcroftpov gia 

 Kent ; Salpingoeai CI. 

 (ii.) Funnel not emerging from the general gelatinous investment 



Phalansteridae 

 E. Flagella 2, unequal or dissimilar in function, the one sometimes short and 

 thick, 

 (rt) Both flagella directed forwards . . . Monadikae 



Monas St. ; Anthop)lujsa Bory (Fig. 37, 13j. 

 (6) One flagellum, usually the longer, turned backwards. Bodoniuae 



Bodo St. (Fig. 38). 

 C. Flagella 2, equal and similar . . Amphimonadidae 



Amphimonas I)uj. ; Diplornita K. (Fig. 37, 10) ; llhipidodendron St. 

 (Fig. 37, U). 

 L). Flagella 3 . . . . . . Trimastigidae 



Ballitujeria K. (Fig. 37, 6) ; Custia Leclercq. 



E. Flagella 4 or more : mostly parasitic in Metazoa. Polymastigidae 

 Trichomonas Donne ; Tetramitus Perty (Fig. 37, 7) ; Hexamitus Duj. ; 

 Lamhlia Blanchard. 



F. Flagella numerous, sometimes constituting a complete ciliiform invest- 

 ment, and occasionally accompanied by an undulating membrane : 

 parasitic in Metazoa. 



(rt) Flagella long : nucleus single ; parasitic in insects Trichonymphidae 

 Dinenympha Leidy ; Joenia Grassi ; Fyrsoiujmplia Leidy ; Triclto- 

 nijmpha Leidy ; Lopliomonas St. ; Maupasia Schew. 



(h) Flagella short, ciliiform, ujiiformly distributed : nuclei veiy 

 numerous, all similar : parasitic in Ami>liil)ia . Opalixidae 



Opalraa Purkinje and Valentin (Fig. AV). 



Volvocaceae 



A. Cells usually isolated, separating after fission or brood -foimation. 

 Usually green (sometimes red), more rarely colourless sajjrojjhytes 



Chlamydomonadiuae 

 ChlamydomonuH Ehrb. ; Phacotus Perty ; Polytoma Ehrb. ; SplnnreUa 

 Sommerf. (Fig. 43) ; Zoochlorella. 



B. Cells multii)lying in the active state by radial divisions in the same 



jilane and usually incurving to form a spherical colony, united in a 

 gelatinous investment, sometimes traver.^ed by plasmic threads 



Volvocidae 

 Gomum O.F.]\[. ; Eudorina Elirb. ; Pandorina Bojy (Fig. 45) ; Stephano- 

 sphaera Cohn ; Volvox L. (Fig. 44). 



