Original taxon: Nassa semistriata var. “recidiva”.
« From Madeira at a depth of 60-70 fathoms. — The two to three uppermost whorls are smooth and shiny, followed by two regularly latticed ones, as in N. reticulata, after which the vertical ribs and sometimes also the spiral strips rapidly disappear. From the third last whorl the former is missing completely; below the suture there is a somewhat raised spiral belt, bounded at the bottom by a recessed line; a second deepened spiral line accompanies this at a short distance, but otherwise the visible part of the third and penultimate turn is smooth, or shows only a few much weaker recessed spiral lines; and only at the base appear again raised spiral strips. » – E. von Martens: “Über einige Conchylien aus Westafrika”, Jahrbücher der Deutschen Malakozoologischen Gesellschaft Jarhang III, Frankfurt 1876.
Synonyms: antiquata, azorica…
The species is considered as a recent sub-species of the mio-pliocene N. macrodon (Bronn, 1831)
On mud at 30m, Málaga, Andalucia, S. Spain. 15mm.
« The mouth is relatively narrow, without parietal fold; columellar border thick and dull, applied to the penultimate whorl, without plicae, with a sharp columellar fold; upward it turns into a brilliant shield, which is not comparatively large, but extends unusually upward and is clearly arched. […] Color pale greenish yellow, with more or less pronounced cloudy flecks of an intense yellow; mouth whitish. » – E. von Martens: op.cit.
Trawled at 80-150m deep, off Málaga. 14,65-16mm.
Original pictures provided by J. M. Martin (ES).
– (CC BY-NC-SA) –
« Shell small, strongish, pale brownish white flecked with chocolate-brown, compact, with a rather tall conical spire, a small closely-coiled turbinated apex, a short conical rounded base, a very short but strong pillar. […] Below the suture there is a small, flat, slightly raised ribbon defined on its lower side by a distinct stippled furrow; this ribbon and furrow begin to show on the third regular whorl, but are barely traceable on the external callus of the outer lip; on each of the upper regular whorls there are three pronounced rounded threads, rising where they cross the ribs into tubercles and separated from one another by narrow furrows. […] Spire somewhat tall, conical, with hardly convex profile-lines. Apex small, pellucid white, consisting of three compact, turbinated, slightly swoln, smooth whorls, the extreme tip of which is very small.. […] Suture linear, scarcely impressed, but distinct from a slight prominence of the subjacent whorl. Mouth oval, short, not expanding, channelled above but not in the lip. […] Outer lip nearly semicircular, but its curve is slightly flattened above and intensified in passing round to the base; it has a little way within the mouth about 10 teeth, of which one at the top, two in the middle, and one at the edge of the canal are strongish; the others are small, but all run some way into the mouth… »