Inter-Relationships of Protista and Primitive Fungi. 165 
F 10 . 2. Protomastigine^e. A, Oikomonas: 1, O termo Ehrenb., about to ingest 
a food particle by means of a vacuole ; 2, 3, formation of cyst in 0. vulgaris Kent. 
B, Codonoeca costata Clark. C, Bicceca lacustris Clark. D, Bicceca socialis Lauterb. : 
1, colony, 2; an individual of same. E, Poteriodendron petiolatum Stein, colony. 
F, Codonosiga pulcherrima Clark : three stages in division. G, Codonosiga botrytis 
Stein : 1, colony ; 2, individual cell; 3, 4, two stages in transverse division ; 5, 
cyst; 6, cyst breaking open and setting free young individuals ; 7, young form 
showing beginning of peristome. H, Codonocladium umbellatum Tatem, colony. 
I, Salpingceca amphoridium Clark, a solitary form with theca and peristome. J, 
Polyceca dichotoma Kent, colony. K, Diplosiga frequentissima Zach., with double 
peristome. L, Ampliimonas globosa Kent, four sessile individuals. M, Diplomita 
socialis Kent. N, Monas : 1, M. (Sterrimonas) formicina Kent; 2, M.vivipara 
Ehrenb. O, Physomonas vestita Stokes. P, Bodo edax Klebs. Q, Pleuromonas 
jaculans Perty : 1, shows ingestion of a food particle; 2 shows division. R, 
Phylomitus amylopliagus Klebs, with two ingested starch-grains. S, Colponema 
loxodes Stein. T, Rhynchomonas nasuta Klebs, showing the motile proboscis-like 
appendage (straight in 1, recurved in 2). U, Elvirea cionce Parona. V, Dallin- 
geria drysdali Kent. W, Trichomastix laccrtcs Blochm. X, Tetramitus descissus 
Perty. Y, Collodictyon triciliatum Carter. Z, Trichomonas vaginalis Donn6. 
Lettering :— c.v., contractile vacuole ; e.s., eye-spot ; nu., nucleus. 
