| Cantharidus dilatatus | |
|---|---|
 | |
| A shell of Cantharidus dilatatus | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Vetigastropoda |
| Order: | Trochida |
| Superfamily: | Trochoidea |
| Family: | Trochidae |
| Genus: | Cantharidus |
| Species: | C. dilatatus |
| Binomial name | |
| Cantharidus dilatatus (G.B. Sowerby II, 1870) | |
| Synonyms | |
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Cantharidus dilatatus is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails. [1]
The shell grows to a length of 8 mm, its diameter also 8 mm. The small, imperforate shell has a conical shape. It is spirally striated. Its sculpture consistis of numerous fine and inconspicuous spiral striae, more distinct and a little further apart on the base.
Its colour is cinereous, pink, or pinkish-brown, usually with white markings near the suture or tessellated with white. Sometimes a broad dark-brown band encircling the periphery of the whorls, and one on the centre of the base. White zigzag bands are sometimes adorning the last 2 or 3 whorls. The epidermis is thin, slightly shining, easily worn off.
The spire is conical, as high as the aperture and a little convex. The apex is acute. The protoconch is very small, consisting of 1½ smooth, slightly convex whorls. The six whorls are slightly convex. The body whorl is obtusely angled at the periphery, and considerably expanded. The base of the shell is flat. The sutures are linear, but little impressed. The aperture is subrotund, oblique, inside mostly highly bluish-reddish iridescent and finely lirate. The outer lip is strengthened by an inner white callosity. The concave columella is vertical. The inner lip is broadly expanded, covering the umbilicus, and spreading as a broad white callosity over the parietal wall. [2]
This marine species is endemic to New Zealand and occurs off the North, South, Stewart and Chatham Islands.
The bluish top shell is a species of small sea snail, a marine gastropod, in the family Trochidae, the top snails.
Coelotrochus chathamensis is a species of small sea snail, a marine gastropod mollusc in the family Trochidae, the top snails or top shells.
Diloma zelandicum is a species of sea snail, a marine gastropod mollusc in the family Trochidae, the top snails or top shells.
Diloma coracinum is a species of small sea snail, a marine gastropod mollusc in the family Trochidae, the top snails. The Māori name is māihi.
Trochus camelophorus is a species of small sea snail, a marine gastropod mollusc in the family Trochidae, the top snails.
Cantharidus capillaceus is a species of sea snail, a marine gastropod mollusc in the family Trochidae, the top snails.
Cantharidus opalus, common name the opal top shell or in the Māori language matangongore, is a species of large sea snail, a marine gastropod mollusc in the family Trochidae, the top snails.
Micrelenchus sanguineus is a species of small sea snail, a marine gastropod mollusc in the family Trochidae, the top shells.
Zenepos totolirata is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.
Cantharidus antipodum is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Roseaplagis artizona is a species of sea snail in the family Trochidae, the top snails.
Micrelenchus huttonii is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Roseaplagis rufozona is a species of sea snail in the family Trochidae, the top snails.
Micrelenchus tenebrosus is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Coelotrochus carmesinus is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Coelotrochus viridis, common name the green top shell, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Zetela textilis is a small deepwater species of sea snail, a marine gastropod mollusk in the family Solariellidae.
Cantharidus bisbalteatus is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Scrinium neozelanicum is a species of sea snail, a marine gastropod mollusk in the family Mitromorphidae.
Leucosyrinx eremita is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.
