The delicately festooned rim of this shell, supplied by the biggest mollusk in the class Acephala, measured about six meters in circumference; so it was even bigger than those fine giant clams given to King François I by the Republic of Venice, and which the Church of Saint-Sulpice in Paris has made into two gigantic holy-water fonts.
Esta concha, perteneciente al mayor de los moluscos acéfalos, con unos bordes delicadamente festoneados, medía una circunferencia de unos seis metros; excedía, pues, en dimensiones alas bellas tridacnas regaladas a Francisco I por la República de Venecia y de las que la iglesia de San Sulpicio, en París, ha hecho dos gigantescas pilas de agua bendita.