Cochlostoma Jan, 1830 revised: an overview of the subgenus Turritus Westerlund, 1883 and its species (Caenogastropoda, Cochlostomatidae) Author Zallot, Enrico 365E17AD-6938-4364-A526-F1BDA2663E10 Per Ligont 1, 33070 Budoia, Italy. ezallot@gmail.com Author Kamchev, Panche 9FA2BE01-3355-4340-B57C-9E2841D5E4C2 Naturalis Biodiversity Center, Darwinweg 2, 2333 CR Leiden, the Netherlands. panekamchev@gmail.com Author Schilthuizen, Menno 683D0AB7-CDD8-4FAA-94B6-436F3BFB8873 Naturalis Biodiversity Center, Darwinweg 2, 2333 CR Leiden, the Netherlands. & Taxon Expeditions, Rembrandtstraat 20, 2311 VW Leiden, the Netherlands. menno.schilthuizen@naturalis.nl Author Fehér, Zoltán E801EC76-8B1E-450B-993E-BBBE57C00EA9 WWF Hungary, Álmos vezér útja 69 / A, 1141 Budapest, Hungary. feher.zoltan.nhmus@gmail.com Author Mattia, Willy De C74A049D-9D7B-4A1F-878B-5BDFD104219F Central Research Laboratories, Burgring 7, 1010, Vienna, Austria; Department of Evolutionary Biology, University of Vienna, Djerassiplatz 1, 1030, Vienna, Austria. wdemattia@gmail.com Author Gittenberger, Edmund D786C279-FC92-4D08-AF16-F79A9705E0AE Naturalis Biodiversity Center, P. O. Box 9517, 2300 RA Leiden, the Netherlands. egittenberger@yahoo.com text European Journal of Taxonomy 2024 2024-03-21 927 1 163 https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2475/11013 journal article 10.5852/ejt.2024.927.2475 2118-9773 10853688 B6E43365-FACA-49BA-8CCD-77E4BF8F0016 Cochlostoma ( T. ) atlanticum ( Bourguignat, 1863 ) Figs 105 (red dot), 110 Pomatias atlanticus Bourguignat, 1863: 430–432 . Types Not seen. Other specimens ALGERIA • 1- Isser (topotypical); 36.8803° N , 3.8563° E ; 1929; Polinski leg.; NHMW49199 . Type locality ALGERIA • Kabilye, Oued Isser. Description SHELL . Rather widely spaced riblets on last part of protoconch. Teleoconch with two lines of reddish spots on whorls. Ribs moderately strong, regularly spaced, not fading toward aperture. Rather weak lip with inwardly bent columellar lobe. MEASUREMENTS . 1 ♀ : whorls =7.8, H = 7.8 mm , H/W= 2.69, roundness= 0.17, ribs incl.= 66°, apert. incl.= 14°, ribs/mm 1 st wh.=11, ribs/mm 4 th wh.=7. Remarks Only empty shells were available. The assignation of this species to Turritus is based on the general morphology of the shell, which is similar to C. ( T .) macei ( Bourguignat, 1870 ) and substantially differs from the other known African species ( Obscurella marocana (Pallary, 1928) ; ( C. ( Auritus ) perseianum (Kobelt, 1886) ; C. ( Auritus ) euconus (Ancey, 1888) ; C. ( Auritus ) letourneuxi (Bourguignat, 1866) ; C. ( Apolloniana ) susaense Brandt, 1958 and C. ( Apolloniana ) barcaense Brandt, 1958 ). The assignment could be supported by paleogeographical considerations, the Kabilye being a part of a European microplate which migrated south and crashed against the African plate (see Leprêtre et al . 2018 ).