Nr. 1] SUBAÉRIAL ALGAE FROM SOUTH AFRICA Sil 
samples examined from the environs of Durban, for instance in 9, 57, 
69, 85, 179, and in a single sample from the «Bush», on the peninsula 
between Donkergat and. Jutten Island, Saldanha Bay. March 11th 
(no. 368). It mostly forms åa macroscopically visible bluish-green, 
velvety coating on the bark of trees. The sheaths are 10—15 u 
broad, thin, and of å bright yellowish brown colour. The cells 
themselves are 8—12 u broad, and %—% as long, slightly tumid. 
The filaments are fragile and dissociate easily. The specimens 
found, agree very well with the material in Corrins, Hotpen and 
SETCHELL, Phyc. Bor. Am. no. 258 and no. 258 a and in RABEN- 
HORST, Algen Europas, no. 352. 
