''Eulithidium'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

of small colorful

sea snail Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguishe ...

s, marine

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...

s in the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Phasianellidae Phasianellidae, with the common name "pheasant shells" or "pheasant snails", is a family of small sea snails with calcareous opercula, marine gastropod mollusks in the subclass Vetigastropoda Vetigastropoda is a major taxonomic group of s ...

, the pheasant shells. Several species in this genus were originally placed in the genus ''Eucosmia''. However, the name ''Eucosmia'' was pre-occupied in zoology for a group of moths established by Stephens in 1829. The molluscan ''Eucosmia'' was therefore called ''Eulithidium'' to distinguish it from the group of

Lepidoptera Lepidoptera ( ) or lepidopterans is an order (biology), order of winged insects which includes butterflies and moths. About 180,000 species of the Lepidoptera have been described, representing 10% of the total described species of living organ ...

Species

Species within the genus ''Eulithidium'' include: * '' Eulithidium adamsi'' (Philippi, 1853) * ''

Eulithidium affine ''Eulithidium affine'', common name the polka-dot pheasant or the spotted pheasant, is a species of sea snail, a marine gastropod mollusk in the family Phasianellidae. Description The height of the shell reaches 6.2 mm. The elongate shell ...

'' (C. B. Adams, 1850) * '' Eulithidium beaui'' (Robertson, 1958) * '' Eulithidium bellum'' (M. Smith, 1937) * '' Eulithidium comptum'' (Gould, 1855) * '' Eulithidium cyclostoma'' (Carpenter, 1864) * '' Eulithidium diantha'' (McLean, 1970) * '' Eulithidium macleani'' (Marincovich, 1973) * '' Eulithidium perforatum'' (Philippi, 1848) * '' Eulithidium phasianella'' (Philippi, 1849) * '' Eulithidium pterocladicum'' (Robertson, 1958) * '' Eulithidium pulloides'' (Carpenter, 1865) * '' Eulithidium rubrilineatum'' (Strong, 1928) * '' Eulithidium substriatum'' (Carpenter, 1864) * ''

Eulithidium tessellatum ''Eulithidium tessellatum'' is a species of sea snail, a marine gastropod mollusc in the family Phasianellidae. Description The shell size varies between 3 mm and 6 mm. The short and solid shell has an oval or ovate shape. The spire i ...

'' (Potiez & Michaud, 1838) * '' Eulithidium thalassicola'' (Robertson, 1958) * '' Eulithidium umbilicatum'' (d'Orbigny, 1840) * '' Eulithidium variegatum'' (Carpenter, 1864) Eulithidium affine 001

References

Pilsbry H.A. 1898. ''Note on the subgenus Eucosmia'' Cpr. The Nautilus, 12: 60.
Phasianellidae {{Phasianellidae-stub