New species of Muricidae (Gastropoda) from the northeastern Atlantic and the Mediterranean Sea Author Houart, Roland Research Associate, Institut royal des Sciences naturelles de Belgique, rue Vautier, 29, 1000 Bruxelles (Belgique) roland. houart @ skynet. be. houart@skynet.be text Zoosystema 2000 22 3 459 469 journal article 10.5281/zenodo.5403721 1638-9387 5403721 Ocenebra brevirobusta n. sp. ( Figs 1-3 ) Murex torosus – Sowerby 1841: 174, fig. 39. – Kiener 1842: 82, pl. 33, fig. 2. – Reeve 1845: pl. 34, fig. 180. – Sowerby 1879: 45, sp. 209, fig. 195. – etc. (not Murex torosus Lamarck 1816 : pl. 441, fig. 5). TYPE MATERIAL. — Holotype in MNHN; paratypes : 3 ( MNHN ), 3 ( SMNH ), 1 ( MHNG ), 1 ( BMNH ), 3 (coll. R. Houart ). FIG. 1. — Ocenebra brevirostra n. sp. , Morocco, Essaouira, holotype MNHN, 38.1 mm. ETYMOLOGY. — From the Latin brevis : short, and robusta : strong. MATERIAL EXAMINED. — Essaouira (ex Mogador ) . Morocco, Atlantic, intertidal, South of harbour pier, 40 lv and dd ( holotype and paratypes ). El Jadida . Rocks pools, intertidal, 8 lv ( MNHN ). Asilah . Beach, in shell debris, 1 dd ( MNHN ). Rabat. Lahlou, beach, in shell debris, 9 dd ( MNHN ). Temara. Beach “Sables d’Or”, 33°55’N , 07°00’W , rocks and silt, 0-2 m , 2 lv ( MNHN ). Safi. On the market, 2 dd ( MNHN ). Agadir . Between stones and on the beach, low tide, 12 dd (coll. F. Swinnen). Morocco . No other data, 7 lv (coll. R. Houart). TYPE LOCALITY. — Morocco , Atlantic, Essaouira (ex Mogador ), intertidal, South of harbour pier. DISTRIBUTION. — Atlantic, North Africa, Morocco . O. brevirobusta and O. erinaceus are sympatric at Asilah , Morocco , while, from the few samples examined, O. brevirobusta does apparently not occur at Tanger , where only O. erinaceus was collected. In a few other Moroccan localities ( El Jadida , Rabat, Temora, Essaouira [formerly Mogador ], Agadir ), O. brevirobusta was collected alone, on rocks, rocky reef flat, or on the pier, without any specimen of O. erinaceus ( Fig. 6 ).