Membranipora membranacea is a very widely distributed species of marine bryozoan known from the Atlantic and Pacific Oceans usually in temperate zone environments. It may be known colloquially as the sea-mat or lacy crust bryozoan and is often abundantly found encrusting seaweeds, particularly kelps.Wikipedia
Dictionnaire universel d'histoire naturelle. v. 3 1849 - Atlas (Zoologie-Botanique)Paris :Chez les editeurs MM. Renard, Martinet et cie, rue et Hotel Mignon, 2 (quartier de l' 30cole-de-Mdecine) ; et chez Langlois et Leclercq, rue de la Harpe, 81 ; Victor Masson, Place de l'Ecole-de-Mdecin1847-1849 biodiversitylibrary.org/page/19539089