Article

Thc coralline algae, like all thc limestone substrata, can be invaded by endolithic microrganisms. Live and dead thalli of Hydrolirhon farinusum (Lamouroux) Penrose & Chamberlain, Lythophyllum incrustans Philippi, Sporolirhon ptychoides Heydrich and Corallina efangala Ellis & Solandcr (Corallinales, Rhodophyta) were therefore examined to discover if, as il happens in the corals, only few endoliths can invade the live coralline algae, while dead thalli can be bored by many organisms. New teehniques have been cmployed.