THE TYSON COLLECTION OF MARINE ALGAE 
103 
G. BecJceri, Schmitz. 
Submerged rocks, Kowie. One specimen. 
G. marginata, (Lam.) (Brachycladia marginata, Soland; Zanardinia 
marginata, J. Ag.). 
Kowie, Port Alfred. 
Note on genus Galaxaura. 
Miss Barton(i) records G. umbellata from Natal (fide Klitzing). 
5. Chaetangium saccatum, (Lamour) J. Ag. 
Tide washed rocks, Table Bay, Sea Point, Green Point. (Also 
Kalk Bay. Barton d).) 
C. ornatum, (L.) Kiitz. 
Pools and rocks, Table Bay, Walfisch Bay. (Also Seal Island, 
Simon’s Bay, Cape Point, Cape Agulhas. Barton(i), 1893; and 
Kei mouth. Barton(2), 1896.) 
Note on the genus Chaetangium. 
The species C. ornatum is very abundant on the coast of the Cape 
Peninsula, and from previous records is evidently of wide distribution. 
It is a common form in the mid-tidal regions in pools and on rock ledges 
on both the east and west shores. 
C. saccatum, on the other hand, is less abundant, and occurs at 
lower tidal levels, in shallow rock pools, or occasionally growing on a 
bare rock face. It is most abundant on the west coasts, and grows at 
Camp’s Bay in association with Splachnidium, fruiting freely, but at 
Sea Point it is less common and at Kalk Bay we have only seen small 
dwarfed plants, sterile and growing in small clusters usually on the 
flat tops of high rocks left with shallow pools at low tides. According to 
Barton, C. Zeyheri, Kiitz. also occurs on the Cape coasts. 
5. Gelidiaceae. 
4. Wrangelia purpurifera, (Harv.) J. Ag. ( = Callithamnion purpuri- 
ferum). 
Table Bay, Sea Point rocks, Three Anchor Bay, on Aniso- 
cladus, etc. 
8. Gelidium cartilagineum, (L.) Grev. Gaill. 
The Kowie, Cape Morgan, Kei, rock pools and ledges, halse Bay. 
(Also Robben Island, Kalk Bay, Camp s Bay, Cape Agulhas, 
Knysna. Barton(i).) 
G. pinnatifidum, (J. Ag.) Schmitz. 
Kowie. Two specimens. 
G. pristioides, J. Ag., Kiitz. ( = Suhria pristioides, J. Ag.). 
False Bay, Port Alfred, Simon’s Bay Rock, deep water, Cape 
Agulhas, Kowie. 
