New Orthalicidae (Mollusca, Gastropoda) from Venezuelan Guayana: unravelling secrets from the Lost World Author Breure, Abraham S. H. text Zootaxa 2009 2065 25 50 journal article 10.5281/zenodo.186920 695e995e-3a9a-41b8-bafa-ed8366b37ef4 1175-5326 186920 Plekocheilus (Eudolichotis) sinuatus ( Albers, 1854 ) ( Fig. 6 K) Bulimus sinuatus Albers, 1854 : 32 . Type locality: Venezuela ; lectotype ZMB 101794 ( Köhler 2007 ). Material. Venezuela , Estado Amazonas, 10 km S Río Autana, 4° 44’ N 67° 33’ W , 100 m , O . Huber leg., 2.vii.1979 ( RMNH 112032 /2). Shell dimensions are given Table 1 . Remarks. This species is reported here for the first time from the Venezuelan Guayana area. Hitherto it was only known from the Cordillera de la Costa in northern Venezuela ( Baker 1926 , Thompson 1957 , Breure 1976 ). There it was found in cloud forest at 1000 m elevation and the current finding in the lowland was unexpected. It is closely allied to the somewhat smaller P. (E.) euryomphalus (Jonas, 1844) , which has been reported from the Roraima savannah in Guyana ( Solem 1964 ).