Contributions to Our Knowledge of the Freshwater Algae of Africa. 13 
2. Oocystis rujoestris, Kirchner, Beitr. z. Algenfl. v. Wuertemberg, 
Jahreshefte d. Ver. f. vaterl. Naturk. in Wuertemberg, xxxvi, 1880, p. 169, 
Tab. II, fig. 2 ; Printz, oj). cit., p. 174, Tab. IV, figs. 7-9. 
Sample 345. 
Previously recorded from Cape Colony (Fritscli). 
(7) SCENEDESMACEAE. 
aENiJs SCENEDESMUS Meyen. 
1. Scenedesmus quadricauda (Turp.), Brebisson, Alg. Ealaise, 1835, 
p. 66 ; Brunntlialer, Syst. Uebers. Scenedesmus, Hedwigia, liii, p. 168, fig. 16. 
Forma typica. 
Samples 71, 312,331. 
Yar. dbundans, Kirchner, Kryptogamenfl. Sclilesien, ii, 1878, p. 98 ; 
Brunntlialer, op. cit., p. 168, fig. 18. 
Sample 71. 
Var, dispar (Breb.), Brunntlialer, oj). cit., pp. 168, 171. (Syn. : 8. dispar, 
Breb.) 
Sample 312. 
Yar. horridus, Kirclmer, op. cit., p. 98 ; Brunntlialer, op. cit., p. 168. 
Samples 158, 159. 
The type and var. dispar previously recorded from Cape Colony (Eritscli) ; 
the type from the Karoo, Holle Eiver, and Little Namaqualand (G-. S. 
West). 
2. Scenedesmus hijugatus (Turp.), Kuetzing, Synops. Diat., Linnaea, viii, 
1833, p. 607. (Syn. : S. ohtusus, Meyen.) 
Samples 311, 345. 
Previously recorded from Cape Colony (Fritscli), the Karoo and Little 
Namaqualand (Gr. S. West). 
Genus COELASTEUM Naegeli. 
1. Coelastrum microporum, Naegeli, in A. Braun, Alg. unicell., etc., 1855, 
p. 70. 
Sample 159. 
Previously recorded from Cape Colony (Fritsch). 
/. irregulare, F. E. Fritsch, Freshw. Alg. S. Orkneys, Journ. Linn. Soc, 
Bot., xl, 1912, p. 328, fig. H. 
Sample 312. 
