A nomenclator of extant and fossil taxa of the Melanopsidae (Gastropoda, Cerithioidea) Neubauer, Thomas A. ZooKeys 2016 2016-07-05 602 1 358 EE949FBF-544B-4A6D-0739-3163A9DF4A5B Pallary, 1911 Pallary 1911 Gastropoda Melanopsidae Melanopsis treatment-meta Animalia Melanopsis gracilenta Sorbeoconcha 133 134 Mollusca species gracilenta  Original source.  Pallary 1911: 130, [unnumbered plate], fig. 19.  Type locality. "Tout pres d'Oudjda, a4 kilom. S.-E., sourdent les belles sources de Sidi-Yahia qui alimentent une veritableoasis, puis la ville d'Oudjda, et vont finalement se deverserdans l'ouedIsly" [near Oujda, 4 km southeast, at the sources of Sidi Yahya that feed an oasis and the city of Oujda, and ultimately will flow into the Oued Isly], Morocco.