''Demoulia'' 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
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 ...
Nassariidae, the Nassa mud snails or dog whelks.
Description
The ovate-globose shell is covered with a downy epidermis. The
spire is short, conical with a papillary
apex. The
whorls are depressed. The
aperture is ovate. The inner
lip is thickened, with a ridge posteriorly. The outer lip is contracted, thickened externally and plicated internally.
Species
Species within the genus ''Demoulia'' include:
* ''
Demoulia abbreviata''
(Gmelin, 1791)
* † ''
Demoulia conglobata''
(Brocchi, 1814)
* ''
Demoulia nataliae''
Kilburn, 1972
* ''
Demoulia obtusata''
(Link, 1807)
* † ''
Demoulia pupa''
(Brocchi, 1814)
* ''
Demoulia tryoni''
(Crosse, 1869)
* ''
Demoulia ventricosa''
(Lamarck, 1816)
* † ''
Demoulia zbyszewskii''
Landau, Marques da Silva & Gili, 2009
; Species brought into synonymy :
* ''Demoulia kurodai''
Tomlin, 1932 : synonym of ''
Nassarius sufflatus''
(Gould, 1860)
* ''Demoulia pulchra''
Gray, 1838 : synonym of ''Demoulia obtusata''
(Link, 1807)
* ''Demoulia retusa''
(Lamarck, 1822): synonym of ''Demoulia ventricosa''
(Lamarck, 1816)
References
* Vaught, K.C. (1989). ''A classification of the living Mollusca''. American Malacologists: Melbourne, FL (USA). . XII, 195 pp
* Gofas, S.; Le Renard, J.; Bouchet, P. (2001). ''Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification''. Collection Patrimoines Naturels, 50: pp. 180–213
External links
Gray, J.E. (1838). On some new species of quadrupeds and shells. Annals of Natural History. ser. 1, 1: 27-30Galindo, L. A.; Puillandre, N.; Utge, J.; Lozouet, P.; Bouchet, P. (2016). The phylogeny and systematics of the Nassariidae revisited (Gastropoda, Buccinoidea). Molecular Phylogenetics and Evolution. 99: 337-353
Nassariidae
{{Nassariidae-stub