8 
Transactions of the Royal Society of South Africa. 
C. Systematic Enumeration op the Species Observed. 
1. ISOKONTAE. 
(a) CHLAMYDOMONADALES. 
(2) CHLAMYDOMONADACEAE. 
Genus CHLAMYDOMONAS Ehrenberg. 
(Note. — Individuals of this genus, wliicli were either too scanty or too 
imperfectly preserved to render determination possible, were observed in 
samj)les 31 — here as a very abundant Palmella-stsige — and 158.) 
(5) YOLVOCACEAE. 
Oenus GONIUM Mueller. 
1. Gonium pectorale, Mueller, Yerm. terrestr. et fluviat., etc., i, 1773, 
p. 60. 
Sample 99 (very rare). 
Genus EUDOEINA Ehrenberg. 
1. Euclorina elegans, Ehrenberg, Infusionsthiere, 1851, p. 78, PI. II, 
fig. 10. 
Sample 99 (rare). 
Previously recorded from Cape Colony and Orange Free State (Eritsch). 
(c) TETRASPORALES. 
(1) SPHAEROCYSTACEAE. 
Genus SPHAEEOCYSTIS Chodat. 
1. Sphaerocystis schroeteri, Chodat, Etudes d. Biol, lacustre, Bull. d. 
I'Herb. Boissier, 1897, p. 292, Tab. IX ; Alg. vert, de la Suisse, Berne, 1902, 
p. 114, fig. 53. 
Samples 338, 339 (rare). 
Previously recorded from Cape Colony (Eritsch). 
(3) PALMELLACEAE. 
Genus GLOEOCYSTIS Naegeli. 
1. Gloeocystis infusionnm (Sclirank), G. S. West, Brit. Freshw. Algae, 
1904, p. 246, fig. 113, A-E. (Syn. : Chlorococcum infusionum (Schrank), 
Menegh.) 
Samples 20, 21 and 24. 
2. Gloeocystis vesiculosa, Naegeli, Gatt. einzell. Alg., 1849, p. 65, 66, 
Tab. IV, P. 
Samples 311, 312. 
