|The family Scyllaeidae
includes elongate, laterally compressed dendronotaceans that have one
or two pairs of large, flattened latero-dorsal lobes.
Tiny transparent papillae, sometimes branching, cover the inner
of the lobes and the notum functioning as gills. The rhinophores are
lamellate, tipped by a finger-like process and contained within a
sheath. Scyllaeids are hydroid feeders. They can "swim" by flapping
from side to side. There are at least two species recorded
representing two genera (Notobryon and Scyllae).