Haminoeoidea (Pilsbry, 1895) is a taxonomic superfamily of small sea snails or bubble shells, marine opisthobranch gastropod mollusks in the suborder Cephalaspidea, the headshield slugs and bubble snails.
These cephalaspideans have distinct anatomical and morphological characteristics, but unfortunately many species have only been described from empty shells. For proper clarification of the taxonomy, those species still need the research necessary to provide a good description of the external and internal anatomy of the living animal.
One can often find these bubble snails in enormous numbers, burrowing in mud on intertidal and sublittoral beds of green algae
such as for example, the Sea lettuce
These bubble snails have thin, inflated shells of ranging in shape from ovoid to flat and oval. They have an involute (sunken) spire.
Description of live animal
The soft parts of the animals can retract completely or partially into their shells, and yet this offers them scant protection, because the aperture
is rather wide and there is no operculum
. Furthermore, the shell is very fragile and can easily be crushed by a predator.
The cephalic shield of most species in this superfamily has two hind lobes that lie back on the front of the shell. The black eyes are usually buried just beneath the surface of the head.
Haminoeid bubble snails are mostly herbivorous
include species of carnivorous aglajids
such as Navanax inermis
Families, genera, species within the Haminoeoidea
Rudman, W.B. (1972g) The herbivorous opisthobranch genera Phanerophthalmus A. Adams and Smaragdinella A. Adams. Proceedings of the Malacological Society of London, 40(3): 189-210, 11 figs.