Nr. 1] SUBAERIAL ALGAE FROM SOUTH AFRICA 41 
PI. XIII. 
Fig. 306—312. Physolinum monile (De Wirpem.) PRINTz nov. comb. 
Larger and smaller parts of thalli with aplanospo- 
rangies. In fig. 308, an open, partly emptied aplano- 
sporangium; in fig. 310, a quite emptied sporangium. 
Fig. 311, with crenulate membrane. 
PI. XIV. 
Fig. 313—316. Atractella affixa nov. gen. et spec. 
.917—327. Dactylococcopsis rhaphidioides forma subtortuosa n. f. 
.928—396. Dactylococcopsis rhaphidioides forma falciformis n. 1. 
i. 991—941. Microcystis amethystina var. vinea nov. var. 
.942—357. Myxosarcina concinna nov. gen. et spec. 
Specimens of various size. 
