Popis
Autor: Jan Delsing
Text ID: 93248
Text Type: 1
Page: 0
Založeno: 22.04.2019 14:26:43 - Uživatel Delsing Jan
Language: EN
Odkazová funkce: [[t:1330159,textblock=93248,elang=EN;Popis]]
A light brown sinistral shell composed of 11 flat whorls with tubercled spiral ribs. Deep suture. Siphonal canal very short, barely bent. Lip simple, expanded. Length 2.5 linien (“lines”), diameter 0.75 linie (L. Pfeiffer probably used the “Preussische Mass” widely used after 1816 until introduction of the metric system; a linie is equivalent to 2.179 mm).
Diagnosis
Lectotype height 5.2 mm, but shells up to 6 mm are present in the type material. Pupoid shape, with deep sutures. Teleconch of 7-9 whorls. Three granulated spiral cords present: the second appears later, in the second half of the spire. A smooth suprasutural cord also present. The last whorl has a fourth weakly tubercled spiral cord, and the base has further two smooth spiral cords. Peristome simple, without bifurcating cords. Multispiral apex of 4-5 whorls, the lower three with two spiral keels and axial riblets. Colour brown; lip white with brown bands.
Remarks
Rolán and Fernández-Garcés (2008) considered this taxon a nomen dubium. Indeed, L. Pfeiffer’s type specimens were thought to be in the Cuming collection (NHMUK) or in the Dhorn collection in the Stettin Museum, which was totally destroyed during the II World War (Dance 1966). Rolán visited the NHMUK without reporting any material on this species (Rolán and Fernández-Garcés 2008). Pfeiffer did not illustrate the species, and the original description is very brief.
Albano, P. & Bakker, P.A.J., 2016, Annotated catalogue of the types of Triphoridae (Mollusca, Gastropoda) in the Museum für Naturkunde, Berlin, with lectotype designations