Trochus firmus
Trochus firmus is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.[2]
| Trochus firmus | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Vetigastropoda |
| Order: | Trochida |
| Superfamily: | Trochoidea |
| Family: | Trochidae |
| Genus: | Trochus |
| Species: | T. firmus |
| Binomial name | |
| Trochus firmus Philippi, 1849 [1] | |
| Synonyms[2] | |
| |
Description
The size of the adult shell varies between 20 mm and 26 mm. The notably thick, solid shell has a rather conical shape. It is, transversely sulcate. It has a pale green ground, painted with close purple-red streaks above. The base has red-spotted girdles. The whorls are a little subangular above the suture and a little plicate below the sutures, appearing somewhat terraced. The body whorl is rounded-angulate and passes into the base with a blunt angle. The sculpture consists of about 7 weak smooth transverse grooves on the upper surface, and about 4 scarcely elevated concentric girdles on the base. The base of the shell is nearly plane, obsoletely cingulate and false-umbilicate. The funnel-shaped pit occupying the place of the umbilicus has a slightly elevated liration. The aperture is rhomboidal. The entirely simple columella is very oblique.[3]
Distribution
This marine species occurs in the Persian Gulf.
References
- Philippi, Conchyl. Cab., p. 317, t. 45, f. 5.
- Bouchet, P. (2014). Trochus firmus Philippi, 1849. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=723681 on 2014-06-15
- H. Pilsbry, Manual of Conchology XI, Academy of Natural Sciences, Philadelphia (described as Trochus (Infundibulops) firmus)
- Bosch D.T., Dance S.P., Moolenbeek R.G. & Oliver P.G. (1995) Seashells of eastern Arabia. Dubai: Motivate Publishing. 296 pp.
External links
- World Register of Marine Species
- "Trochus firmus". Gastropods.com. Retrieved 16 January 2019.