Julia (gastropod)
| Julia | |
|---|---|
 |
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| Drawing of the shell (the exterior of the right valve) of taxon named Julia borbonica | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): |
clade Heterobranchia clade Euthyneura |
| Superfamily: | Oxynooidea |
| Family: | Juliidae |
| Subfamily: | Juliinae |
| Genus: |
Julia Gould, 1862 |
| Species | |
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See text. |
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| Synonyms | |
|
Prasina Deshayes, 1863 |
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clade Euthyneura
clade Panpulmonata
clade Sacoglossa
clade Oxynoacea
See text.
Prasina Deshayes, 1863
Julia is a minute sea snails genus, marine gastropod mollusks or micromollusks in the superfamily Oxynooidea.
Julia is the type genus of the family Juliidae.
As Tryon (1884) wrote in his description of the genus Julia: the shell is oblong, thick, and cordiform. The valves are closed, the margins entire and the valves are inequilateral. The lunule is deep circular, projecting into the interior of the right valve, the left valve is in the same place furnished with dentiform tubercles. The hinge line is simple and arched. The ligament is external and narrow. There are two muscle scars which are unequal and subcentral.
These animals have two valves, and the soft parts can be completely withdrawn inside the shell. The two valves are usually thin and translucent.
The empty valves of the shells of these animals are in some cases green, in other cases brownish-green or yellow, and in yet others, colorless. The species Julia zebra has shells that are finely striped with brown and blotched with white.
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