''Agagus'' 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 ...

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 ...

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

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 ...

Trochidae The Trochidae, common name top-snails or top-shells, are a family of various sized sea snails, marine gastropod molluscs in the subclass Vetigastropoda. This family is commonly known as the top-snails because in many species the shell resembles ...

, the top snails.

Species

Species within the genus ''Agagus'' include: * ''

Agagus agagus ''Agagus agagus'' is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails. Description The shell grows to a length of 9 mm, its diameter 10 mm. The umbilicate shell has a depressed conical shape wi ...

'' Jousseaume, 1894 * ''

Agagus stellamaris ''Agagus'' is a genus of sea snails, marine gastropod molluscs in the family Trochidae, the top snails. Species Species within the genus ''Agagus'' include: * '' Agagus agagus'' Jousseaume, 1894 * '' Agagus stellamaris'' Herbert, 1991 Martin Zu ...

'' Herbert, 1991 Martin Zuschin, Ronald Janssen and Christian Baal (2009) also mention an ''Agagus n.sp'' found in the

Red Sea The Red Sea is a sea inlet of the Indian Ocean, lying between Africa and Asia. Its connection to the ocean is in the south, through the Bab-el-Mandeb Strait and the Gulf of Aden. To its north lie the Sinai Peninsula, the Gulf of Aqaba, and th ...

, that differs from ''A. agagus'' by its smooth base and from ''A. stellamaris'' (found in the

Indian Ocean The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or approximately 20% of the water area of Earth#Surface, Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia (continent), ...

) by its higher conical shape.Zuschin, Janssen, Baal - Gastropods and their habitats from the northern red Sea, Part I Patellogastropoda, Vetigastropoda, Cycloneritimorpha.pdf Ann. Naturhist. Mus. Wien 111 A 73-158, Wien April 2009
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References

External links

Jousseaume [F.P.] 1894. Diagnoses des coquilles de nouveaux mollusques. Bulletin de la Société Philomathique de Paris, 8(6): 98-105

Herbert D.G. (1991) ''A revision of the genus Agagus Jousseaume, 1894 (Mollusca: Gastropoda: Trochidae).'' Journal of Natural History 25: 883-900

D.G. Herbert (1990), ''A revision of the genus Agagus Jousseaume, 1894 (Mollusca: Gastropoda: Trochidae)''; Journal of Natural History Volume 25, Issue 4, 1991
Gastropod genera Taxa named by Félix Pierre Jousseaume Trochidae {{Trochidae-stub