FLAGELLA.TA, MONADS. 
Prot, 14 
forming a “ gemma/’ The gemma develops a flagellum of from six to 
seven times its own length, and one or two contractile vacuoles. The 
tentacle begins as a process of the yellow body-substance. 
Stein (19) figures 91 species of Flagellata already known to science, 
with notes on the synonymy. 
Magosphmra planula, Hackel (17), p. 144, compared with the various 
stages and forms of the cells of the Sponges. 
Polytoma uvellciy Ehrb. (17), p. 144, the acorn-Monad of Dallinger & 
Drysdale. 
Salpingceca amphoridium, Clark, metamorphoses by budding encys- 
tation and formation of spores (18), pi. iv. figs. 2-7 ; S. gracilis^ Clark, 
S. marina, Clark, 1. c. pi. iv. figs. 17, 20, 35, & 36. 
Salpingceca gracilis, Clark (15), p. 227, fig. 4. S ampTioridium, Clark? 
{1. c.), p. 228, fig. 3. 
Codosiga, Clark, C. hotrytis, Ehrb. (15), p. 222. fig. 1, = C. pulcherrima, 
Clark. The “ collar ” seems homologous with the lip process of some 
other Monads. Prehension of food effected by a contractile vacuole 
lying outside the collar. Distinct nucleus ; a non-contractile vacuole. 
Sometimes develops a mucous coat, beset with foreign bodies. 
Codosiga pulcherrima, Clark (18), p. 115, pi. iii. figs. 9-12; multipli- 
cation by longitudinal fission. General structure and functions of the 
collar-bearing flagellate Monads described (p. 116). 
Bicosoeca\^Bicoi-'\, Clark, B. lacustris^ Clark ? (15), p. 231, fig. 6 ; 
forms colonies. 
Bicosceca lacustris, Clark, B. gracilipes, Clark (18), pi. iv. figs. 45-49 
&53. 
Codonceca costata, Clark, (18) pi. iv. fig. 60. 
Dinobryon[-um] sertularia, Ehrb. (15), p. 233, fig. 11. An accessory 
cilium and two contractile vacuoles present. Apparently buds and 
encysts. 
Dinohryon sertularia, Ehrenberg, Z). Dujardin (18), pi. iv* 
figs. 64-56. 
Autophysa, Bory de Yincent, A. {Volox) vegetans, 0. F. Muller (15), 
pp. 216 & 217, pi. xii. fig. 8. ' 
Trepomonas agilis, Dujard. (15), p. 235, fig. 16. Exhibits protoplasm- 
streaming. A nucleus. 
Hexamitus inflatus, Dujard. (15), p. 238, fig. 20. Nucleus. 
Pyramimonas descissa, Perty (15), p. 240, fig. 21, and Chilomonas para- 
mcecium, Ehrb. fig. 15. 
Astasia (15): A. trichophora, Ehrb., p. 248, fig. 19. 
Anisonema (16): A. acinus, Duj., p. 253, fig. 17; A. sulcatum, Du]., 
fig. 18 ; during fission the nucleus becomes striated, and divides with the 
body. Lophomonas hlattarum, Stein (15), fig. 24. 
Polytoma uvella, Ehrb. (7), p. 182, pi. x. figs. 18-25. Development ; 
passes through Morula stage. 
Astasia deformis, Fromentel (7), p. 185, pi. x. fig. 33. Protrudes amoe- 
boid processes. 
Euglena viridis, Miill. (7), p. 186, pi. xi. figs. 38 & 39. Development 
by encystation, &c. E. pyrum, Ehrb. pi. x. fig. 38. 
1878. [voL. XV.] c 6 
