Family Leucettidae de Laubenfels, 1936

“ Clathrinida with a solid body. The aquiferous system is always leuconoid. The choanoskeleton is well developed, in the form of a regular network composed of triactines and/or tetractines. The cortex is thin and composed of spicules similar to those of the choanoskeleton” (Borojevic et al. 2002).