Liamorpha elegans (de Folin, 1870)
Sénégal to Balearic Islands. Ectoparasit at least in the infralittoral. Protonym: mathilda elegans.
 
Synonyms pulchra, sculptatissima« Very pretty pecies, ovoid, white, shiny, having two embryonic whorls whose apex is placed on the upper plane, and only three normal whorls. The latter are decorated, on the first half, with longitudinal ribs crossing two prominent spiral cords. On the reverse of the second cord, the ribs disappear, and on the second half of the whorl there remains only one cord; finally, on the last whorl, the cords follow one another and adorn the entire base. The suture is crenellated by the ribs of the first half of each whorl. The aperture is approximately oval, wider at the bottom than at the top. The right edge is reflected on the columella; the left unites with the base by a kind of fairly wide and rounded channel. » – de Folin & Périer: Les fonds de la mer vol. 1, Paris 1870, p.212.

Above, Mathilda elegans in de Folin & Périer, plate XXVI, fig. 11 (and not XXVIII, 15, which does not exist).
The sculpture of the last whorl can vary from a population to another, in the number of spiral cords and radial ribs (Peñas & al., 2014, p.128). – 40-50m deep, Gibraltar area. 1,6mm.
The protoconch of type A. Scale spacing: 0,1mm.

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