Two species of the lunulitiform cheilostome genus Selenaria have been observed alive under laboratory conditions. The behaviour of both species resembled that of living Cupuladriidae in that colonies were supported by peripheral avicularian mandibles and cleaned of sediments by the remaining mandibles. Both species exhibited distinct, coordinated colony-wide behaviour patterns during feeding. Colones of S. maculata alone were capable of reversal of orientation and of sustained locomotion. This capacity is reflected in the morphology of the avicularia.
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