. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. THE GEOGRAPHICAL DISTRIBUTION OF SOUTHERN AFRICAN HYDROIDS 179 SOUTH EAST. SECTORS Fig. 7. The distribution according to depth of three species which show tendencies towards greater depths in warmer waters. Actual records. ESTUARINE AND BRACK-WATER SPECIES Although many hydroids penetrate into the mouths of estuaries, especially on rocky substrata, only two species are truly estuarine and have not been found in the open sea. These are Bimeria fluminalis, which grows on mangrove roots in Richards Bay and St Lucia estua
. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. THE GEOGRAPHICAL DISTRIBUTION OF SOUTHERN AFRICAN HYDROIDS 179 SOUTH EAST. SECTORS Fig. 7. The distribution according to depth of three species which show tendencies towards greater depths in warmer waters. Actual records. ESTUARINE AND BRACK-WATER SPECIES Although many hydroids penetrate into the mouths of estuaries, especially on rocky substrata, only two species are truly estuarine and have not been found in the open sea. These are Bimeria fluminalis, which grows on mangrove roots in Richards Bay and St Lucia estuaries, and Hydractinia kaffraria, which is a commensal on the shell of Nassa kraussiana and occurs in estuaries from the Breede River mouth on the south coast to Durban on the east coast. The Limnomedusan, Ostroumovia inkermanica, is known from several brack-water lakes on the east coast, the hydroid from Lagoa Poelela, Mozam- bique, in a salinity of 8 parts per thousand, both hydroid and medusa from Nhlange Lake, Zululand, in 3-4 parts per thousand, and the medusa alone from. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original South African Museum. Cape Town [etc. ] The Museu
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Keywords: ., bookauthorsouthafr, bookcentury1800, bookdecade1890, bookyear1898
