Infestation by the symbiotic egg predator, Carcinonemertes sp (Nemertea: Carcinonemertidae), in the spider crab, Libinia spinosa (Decapoda: Majidae), from São Sebastião Island, SP, Brazil - Santos, Cynthia; Bueno, Sérgio Luiz de Siqueira (Simpósio de Biologia Marinha, 2003)