Abstract

Upon observing the algal growth in the small artificial pond, located just in front of the morphological laboratory of the Botany Department of National Taiwan University, the writer became interested in the filamentous algae growing on snail shells. He began to collect the interesting epizoic algae from the previous mentioned pond, as well as from rivers near the cities of Nantou and Suao, these were growing attached to the river snail (Viviparus malleatus), and he also collected algae from the pond tortoise (Cyclenus jtavemarquetama) at the Taipei Zoo. The writer has carefully studied these preserved samples and has also cultured these algae for six months, so has' had an opportunity to observe them.