taxonID	type	description	language	source
038F3842CA18FF90B35DFAC4FD5518A9.taxon	description	(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).	en	Houart, Roland (2000): New species of Muricidae (Gastropoda) from the northeastern Atlantic and the Mediterranean Sea. Zoosystema 22 (3): 459-469, DOI: 10.5281/zenodo.5403721
038F3842CA18FF90B35DFAC4FD5518A9.taxon	materials_examined	TYPE MATERIAL. — Holotype in MNHN; paratypes: 3 (MNHN), 3 (SMNH), 1 (MHNG), 1 (BMNH), 3 (coll. R. Houart).	en	Houart, Roland (2000): New species of Muricidae (Gastropoda) from the northeastern Atlantic and the Mediterranean Sea. Zoosystema 22 (3): 459-469, DOI: 10.5281/zenodo.5403721
038F3842CA18FF90B35DFAC4FD5518A9.taxon	etymology	ETYMOLOGY. — From the Latin brevis: short, and robusta: strong.	en	Houart, Roland (2000): New species of Muricidae (Gastropoda) from the northeastern Atlantic and the Mediterranean Sea. Zoosystema 22 (3): 459-469, DOI: 10.5281/zenodo.5403721
038F3842CA18FF90B35DFAC4FD5518A9.taxon	materials_examined	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).	en	Houart, Roland (2000): New species of Muricidae (Gastropoda) from the northeastern Atlantic and the Mediterranean Sea. Zoosystema 22 (3): 459-469, DOI: 10.5281/zenodo.5403721
038F3842CA1FFF95B17BFF42FC3C1D6B.taxon	description	(Figs 7 - 10)	en	Houart, Roland (2000): New species of Muricidae (Gastropoda) from the northeastern Atlantic and the Mediterranean Sea. Zoosystema 22 (3): 459-469, DOI: 10.5281/zenodo.5403721
038F3842CA1FFF95B17BFF42FC3C1D6B.taxon	materials_examined	TYPE MATERIAL. — Holotype in MNHN; paratypes: 6 (MNHN), 2 (SMNH), 1 (BMNH), 3 (coll. R. Houart), 2 (coll. F. Swinnen).	en	Houart, Roland (2000): New species of Muricidae (Gastropoda) from the northeastern Atlantic and the Mediterranean Sea. Zoosystema 22 (3): 459-469, DOI: 10.5281/zenodo.5403721
038F3842CA1FFF95B17BFF42FC3C1D6B.taxon	etymology	ETYMOLOGY. — From the Greek leukos: white.	en	Houart, Roland (2000): New species of Muricidae (Gastropoda) from the northeastern Atlantic and the Mediterranean Sea. Zoosystema 22 (3): 459-469, DOI: 10.5281/zenodo.5403721
038F3842CA1FFF95B17BFF42FC3C1D6B.taxon	materials_examined	MATERIAL EXAMINED. — Lanzarote. Canary Islands, La Isleta, intertidal, 13 lv and dd (holotype and paratypes); Lanzarote (no other data), 2 dd (coll. R. Houart). Orzola. Tide line, 8 lv, 11 dd (MNHN); on rocks, 6 dd (2 paratypes) (coll. F. Swinnen). TYPE LOCALITY. — Canary Islands, Lanzarote, La Isleta, intertidal.	en	Houart, Roland (2000): New species of Muricidae (Gastropoda) from the northeastern Atlantic and the Mediterranean Sea. Zoosystema 22 (3): 459-469, DOI: 10.5281/zenodo.5403721
038F3842CA1FFF95B17BFF42FC3C1D6B.taxon	distribution	DISTRIBUTION. — Canary Islands, NW Lanzarote, intertidal (Fig. 10).	en	Houart, Roland (2000): New species of Muricidae (Gastropoda) from the northeastern Atlantic and the Mediterranean Sea. Zoosystema 22 (3): 459-469, DOI: 10.5281/zenodo.5403721
038F3842CA1FFF95B17BFF42FC3C1D6B.taxon	description	DESCRIPTION Shell large sized for the genus, up to 18.9 mm in length at maturity (holotype), lanceolate, heavy, weakly nodose. Spire very high, with 1.5 protoconch whorls, and up to 6 - 6.5, broad, convex teleoconch whorls. Suture adpressed. Protoconch small. Whorls rounded, smooth, glossy; ending straight, abrupt. Axial sculpture of teleoconch whorls consisting of high, broad, rounded ribs. First to third whorls with eleven or twelve ribs, fourth with eleven, fifth with nine or ten, last whorl with eight or nine ribs, and broad, strong terminal varix, occasionally with one or two other erratically placed varices. Spiral sculpture of low, broad, primary and secondary cords, and weak threads. Last whorl, including shoulder, with six or seven primary cords, six or seven secondary cords between each pair of primary cords, and usually a thread between secondary and primary cords. Aperture small, ovate. Columellar lip narrow, smooth, with small parietal tooth, adherent, briefly and weakly erect abapically. Anal notch broad. Outer lip weakly erect, crenulate, with five, occasionally six strong, broad denticles within. Abapical denticle strongest; when six denticles, adapical (additional) denticle small. Siphonal canal short, weakly dorsally bent, sealed, spirally sculptured. Uniformly white, dirty-white, or tan-white. Aperture white. Operculum light brown, D-shaped, with lateral nucleus in lower right. Attached surface with about four growth lines, and broad callused rim. Radula consisting of a sickle shaped lateral tooth with broad base and a rachidian bearing a short, projecting central cusp, long lateral cusp with inner lateral denticle on base; marginal area with three short denticles and long marginal cusp.	en	Houart, Roland (2000): New species of Muricidae (Gastropoda) from the northeastern Atlantic and the Mediterranean Sea. Zoosystema 22 (3): 459-469, DOI: 10.5281/zenodo.5403721
038F3842CA1FFF95B17BFF42FC3C1D6B.taxon	discussion	REMARKS Ocinebrina leukos n. sp. differs from O. edwardsi (Payraudeau, 1826), that occurs in La Caleta, Lanzarote, sympatrically with O. leukos, in being larger, and very stable in form, sculpture, and colour, while O. edwardsi has a highly variable morphology, even in a same locality, as in La Caleta. O. leukos has constantly a uniform whitish shell with a very high spire, broad axial ribs, broad, rounded outer apertural lip, and broad, voluminous last teleoconch whorl. I never observed a single specimen of O. edwardsi from the Canary Islands, or from any other locality, with these characters combined. Ocinebrina edwardsi may be occasionally (rarely) of a uniform white colour, or may have a broad apertural lip, or a high spire, but then it lacks other characters, peculiar to O. leukos. O. leukos was recorded, and illustrated by Nordsieck & Talavera (1979: 113, pl. 30, fig. 17) as O. nicolai Monterosato, 1884, a different species known from scattered localities throughout the Mediterranean Sea.	en	Houart, Roland (2000): New species of Muricidae (Gastropoda) from the northeastern Atlantic and the Mediterranean Sea. Zoosystema 22 (3): 459-469, DOI: 10.5281/zenodo.5403721
038F3842CA1EFF95B32CFCC3FB271D93.taxon	description	Genus Muricopsis Bucquoy & Dautzenberg, 1882	en	Houart, Roland (2000): New species of Muricidae (Gastropoda) from the northeastern Atlantic and the Mediterranean Sea. Zoosystema 22 (3): 459-469, DOI: 10.5281/zenodo.5403721
038F3842CA1EFF9BB322FC78FBCA1D88.taxon	description	(Figs 3; 11; 12) Ocenebra hybrida – Tenekides 1989: 38, fig. 50.12 (not O. hybrida [Aradas & Benoît, 1876]).	en	Houart, Roland (2000): New species of Muricidae (Gastropoda) from the northeastern Atlantic and the Mediterranean Sea. Zoosystema 22 (3): 459-469, DOI: 10.5281/zenodo.5403721
038F3842CA1EFF9BB322FC78FBCA1D88.taxon	materials_examined	TYPE MATERIAL. — Holotype in IRSNB 28833 / 486; paratypes: 1 (MNHN), 1 (BMNH), 1 (SMNH), 3 (coll. R. Houart), 3 (coll. D. Çeviker), 1 (coll. W. Engl), 1 (coll. C. Delongueville), 1 (coll. R. Scaillet), 1 (coll. F. Swinnen). TYPE LOCALITY. — West Turkey, Aegean Sea, Iskenderun Gulf.	en	Houart, Roland (2000): New species of Muricidae (Gastropoda) from the northeastern Atlantic and the Mediterranean Sea. Zoosystema 22 (3): 459-469, DOI: 10.5281/zenodo.5403721
038F3842CA1EFF9BB322FC78FBCA1D88.taxon	etymology	ETYMOLOGY. — Named after Dogan Çeviker, Istanbul, Turkey, who provided the type material and very useful information about turkish muricids.	en	Houart, Roland (2000): New species of Muricidae (Gastropoda) from the northeastern Atlantic and the Mediterranean Sea. Zoosystema 22 (3): 459-469, DOI: 10.5281/zenodo.5403721
038F3842CA1EFF9BB322FC78FBCA1D88.taxon	materials_examined	MATERIAL EXAMINED. — Iskenderun Gulf. West Turkey, Aegean Sea, 9 lv (holotype, paratypes MNHN, Engl, Houart, Çeviker), 5 lv (coll. Çeviker). Bozcaada. Paratypes BMNH, SMNH, Delongueville, Scaillet, 13 lv and dd (coll. Çeviker), 9 lv and dd (coll. R. Houart).	en	Houart, Roland (2000): New species of Muricidae (Gastropoda) from the northeastern Atlantic and the Mediterranean Sea. Zoosystema 22 (3): 459-469, DOI: 10.5281/zenodo.5403721
038F3842CA1EFF9BB322FC78FBCA1D88.taxon	description	Kale. 1 lv (coll. R. Houart). Mersin. Tasucu, 1 lv (coll. R. Houart); Liman Kalesi, 1 lv (coll. R. Scaillet).	en	Houart, Roland (2000): New species of Muricidae (Gastropoda) from the northeastern Atlantic and the Mediterranean Sea. Zoosystema 22 (3): 459-469, DOI: 10.5281/zenodo.5403721
038F3842CA1EFF9BB322FC78FBCA1D88.taxon	materials_examined	Cyprus. Aya Napa, 65 (1 paratype and 64 juveniles), lv and dd (coll. F. Swinnen), 2 lv (coll. R. Scaillet). DISTRIBUTION. — Eastern Mediterranean Sea, Greece, Saronikos (Tenekides 1989); Turkey: Bozcaada, Mersin, Iskenderum; Cyprus: Aya Napa (Fig. 13). DESCRIPTION Shell medium sized for the genus, up to 23 mm in length at maturity, biconical. Heavy, spinose. Spire high with 1.5 protoconch whorls and up to six angulate, shouldered, spinose teleoconch whorls. Suture impressed, partially obscured by small axial lamellae of following whorl. Protoconch large. Whorls rounded, minutely punctate. Terminal varix delicate, thin, erect, strongly curved. Axial sculpture of teleoconch whorls consisting of moderately strong, broad varices, each with four primary, short spines, rarely with an additional spinelet between first and second adapical primary spines. Shoulder spine longest. First teleoconch whorl with eight to ten varices, second with seven to nine, third, fourth and fifth with eight or nine, last with six to eight. Other axial sculpture of numerous, weak, growth lamellae. Spiral sculpture of one or occasionally two primary cords on first to fifth teleoconch whorls. Last whorl with four primary cords, forming small spines at intersection with axial varices, occasionally with five cords. Presence of one to three squamous threads between each pair of cords; three or four threads between last abapical cord of last whorl and adapical cord of siphonal canal. Aperture narrow, ovate. Columellar lip narrow, with two, occasionally weak, abapical folds. Lip weakly erect abapically, adherent at adapical extremity. Anal notch broad, deep. Outer lip weakly erect, with five weak, or strong denticles within. Second adapical denticle usually strongest. Siphonal canal short, narrow, weakly dorsally recurved, open, with one short spine. Greyish or milky-white, spiral cords and threads whitish or light brown. Dark brown or blackish brown on shoulder and between spiral cords. Operculum dark brown, ovate-elongate, with apical nucleus. Radula not examined. REMARKS? Muricopsis cevikeri n. sp. is included in a group of species with its main occurence in the New World (i. e. the? M. oxytatus [M. Smith, 1938] group). The “ true ” species of Muricopsis have five, rarely six spiral cords on the last whorl. The shells in the oxytatus group differ from the typical Muricopsis species in having a reduced, or obsolete second spiral cord (D. Merle, in litt.).? M. cevikeri n. sp. differs from M. cristatus, a sympatric species apparently living in the same environment, in having the spire whorls ornamented with a single primary, keel, forming the main keel of last teleoconch whorl, or with two primary cords of which the abapical one is narrower, and forms the second, narrower, adapical primary cord on last whorl. In comparison, M. cristatus has two primary cords of similar size, occasionally three, on spire whorls. The last whorl of M. cevikeri is ornamented with four primary spiral cords of which the first one is broadest, second one smallest. The third and fourth ones are similar and of an intermediate size. A fifth secondary cord rarely occurs between first and second adapical primary cords. M. cristatus usually has five spiral cords, rarely six. The apical cord is broadest, the second and third ones are narrower, the fourth one is broad, and the fifth one is slightly narrower than the fourth one, or similar in size. In juvenile specimens of M. cevikeri the spiral cords are narrower, and more broadly spaced than in juveniles of M. cristatus. The colour is also interesting as I never observed any form of M. cristatus with such a constant pattern (see description and figures).	en	Houart, Roland (2000): New species of Muricidae (Gastropoda) from the northeastern Atlantic and the Mediterranean Sea. Zoosystema 22 (3): 459-469, DOI: 10.5281/zenodo.5403721
