Xanthodaphne dalmasi Dautzenberg & Fischer 1897

• Main Authors: Figueira, Raquel Medeiros Andrade, Absalão, Ricardo Silva
• Format: Text
• Language: unknown
• Published: Zenodo 2012
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Gastropoda; Neogastropoda; Raphitomidae; Xanthodaphne; Xanthodaphne dalmasi; Antarctic; Ricardo; Antarc*; National Institute of Polar Research; Northeast Atlantic
• Online Access: https://dx.doi.org/10.5281/zenodo.5632956; https://zenodo.org/record/5632956

Xanthodaphne dalmasi (Dautzenberg & Fischer, 1897) (Figs. 12–13) Pleurotoma dalmasi Dautzenberg & Fischer, 1897 a: 39: Dautzenberg & Fischer (1897 b: 153, pl. 3, fig. 4); Xanthodaphne dalmasi (Dautzenberg & Fischer, 1897): Bouchet & Warén (1980: 66, figs. 28, 236, 237). Type material : In Museé Océanographique de Monaco. Type locality : Azores, Hirondelle (1888), sta. 20 (40 º 05’N, 29 º 48 ’W), 1850 m; sta. 47 (39 º 18 ’ 05”N, 33 º 32 ’ 15 ”W), 1372 m; sta. 69 (38 º 33 ’ 21 ”N, 30 º 28 ’ 54 ”W), 1300 m; Princesse Alice (1895), sta. 46 (37 º 42 ’ 40 ”N, 27 º 25 ’ 30 ”W), 1385 m; sta. 71 (38 º 26 ’N, 28 º 51 ’W), 1165 m; sta. 117 (38 º 59 ’N, 30 º 38 ’ 20 ”W), 2102 m; Princesse Alice (1896), sta. 53 (38 º 20 ’N, 30 º 25 ’W), 1550 m; sta. 69 (39 º 11 ’N, 33 º 04’ 55 ”W), 1846 m; sta. 74 (39 º 21 ’ 20 ”N, 33 º 26 ’W), 1360 m; sta. 90 (39 º 11 ’N, 32 º 44 ’ 30 ”W), 1600 m; sta. 109 (37 º 40 ’N, 28 º 46 ’ 30 ”W), 1919 m. Material examined : 18495 [1] B # 32; 18496 [3] OP II # 44; 17856 [3] OP II # 45; 18098 [2] OP II # 47; 18497 [2] OP II # 48; 18101 [1] OP II # 50; 18140 [1] OP II # 50 A; 18138 [4] OP II # 52; 18498 [6] OP II # 53; 15576 [1] OP II # 54; 18767 [1] OP II # 57; 18499 [1] OP II # 58; 18768 [2] OP II # 61; 18500 [7] OP II # 62; 18501 [1] OP II # 63; 15915 [2] OP II # 67; 17769 [1] OP II # 68; 18770 [1] OP II # 70; 18502 [1] OP II # 72; 18503 [9] OP II # 73; 18504 [6] OP II # 75; 18505 [4] OP II # 78; 18771 [1] OP II # 80; 18506 [9] OP II # 83; 18507 [3] OP II # 86; 18508 [5] OP II # 87; 17868 [2] OP I # 44; 18509 [4] OP I # 45; 17899 [4] OP I # 47; 18510 [2] OP I # 48; 18511 [1] OP I # 52; 18512 [7] OP I # 53; 17919 [1] OP I # 61; 18513 [4] OP I # 62; 15865 [2] OP I # 68; 17999 [1] OP I # 72; 18514 [3] OP I # 73; 15418 [3] OP I # 74; 18008 [1] OP I # 75; 18010 [1] OP I # 77; 18515 [4] OP I # 78; 18516 [3] OP I # 83; 18029 [3] OP I # 86; 18517 [4] OP I # 87. Description : Shell moderately plump, white, up to 4.94 long. Protoconch with about 3.5 whorls, yellowish. Protoconch 1 with rows of tiny crosses. Protoconch 2 with diagonal cancellation on the lower 3 / 4 of the whorls and axial riblets on the upper 1 / 4. Clear-cut proto-teleoconch boundary. Teleoconch whorls evenly rounded, with a very gentle shoulder. Weakly curved axial riblets in the subsutural zone, just below the suture. Sculpture of faint, gently undulating, low spiral cordlets below the shoulder, vanishing at the base. Suture shallow. Base moderately long and convex with inflexion to form a broad anterior siphonal canal. Fasciolar region with about six oblique and very faint cords. Anal sinus shallow and wide. Inner lip not discernible. Parietal wall curved. Outer lip thin. Aperture ovoid. Geographic distribution : Northeast Atlantic: Azores (Dautzenberg & Fischer, 1897 a; Dautzenberg & Fischer, 1897 b); Azores, Portugal and Canary Islands (Bouchet & Warén, 1980). Southwest Atlantic: Campos Basin, Rio de Janeiro (this paper). Bathymetry : 698 m (this paper)– 2900 m (Bouchet & Warén, 1980). Discussion : There are seven species of Xanthodaphne reported from the Western Atlantic (Rosenberg, 2009): X. translucida (Watson, 1881), X. bruneri (Verrill & Smith, 1884), X. leptalea (Bush, 1893), X. pachia (Watson, 1881), X. sofia (Dall, 1889), X. pompholyx (Dall, 1889) and X. heterogramma (Odhner, 1960). According to Numanami (1996: 222), X. translucida has a smooth protoconch (Watson, 1886, 330, pl. 25, fig. 11) and should be classified in another genus. Xanthodaphne dalmasi can be distinguished from any other species of this genus by its typical sculpture of softly undulating low spiral cordlets; whereas in all other congeners the spiral sculpture is rectilinear. Xanthodaphne dalmasi is here reported for the first time in South Atlantic waters. It was previously known to occur in Azores, Portugal and Canary Islands. Its bathymetric range is also increased. The shallowest depth previously reported was 1165 m (Dautzenberg & Fischer, 1897 a) and it has now been found at 698 m. : Published as part of Figueira, Raquel Medeiros Andrade & Absalão, Ricardo Silva, 2012, Deep-water Raphitomidae (Mollusca, Gastropoda, Conoidea) from the Campos Basin, southeast Brazil, pp. 1-27 in Zootaxa 3527 on pages 10-11, DOI: 10.5281/zenodo.210977 : {"references": ["Dautzenberg, P. & Fischer, H. (1897 a) Campagnes scientifiques de S. A. le Prince Albert Ier de Monaco. Diagnoses d'especes nouvelles de gasteropodes. Memoires de la Societe Zoologique de France, 10, 37 - 45.", "Dautzenberg, P. & Fischer, H. (1897 b) Dragages effectues par l' Hirondelle et par le Princess-Alice, 1888 - 1896. Memoires de la Societe Zoologique de France, 10, 139 - 234, pls. 3 - 7.", "Bouchet, P. & Waren, A. (1980) Revision of the Northeast Atlantic Bathyal and abyssal Turridae (Mollusca, Gastropoda). Journal of Molluscan Studies, Supplement 8, 1 - 119.", "Rosenberg, G. (2009) Malacolog 4.1.1: A Database of Western Atlantic Marine Mollusca. [WWW database (version 4.1.1)] URL http: // www. malacolog. org /", "Watson, R. B. (1881) Mollusca of H. M. S. Challenger Expedition. Parts VIII-X. Journal of the Linnean Society (London), 15, 388 - 475.", "Verrill, A. E. (1884) Second catalogue of Mollusca, recently added to the fauna of New-England coast and adjacent parts of the Atlantic, consisting mostly of deep-sea species, with notes on others previously recorded. Transactions of the Conneticut Academy of Arts and Sciences, 6 (1), 139 - 294.", "Bush, K. (1893) Report on the Mollusca dredged by the ' Blake' in 1880, including the descriptions of several new species. Bulletin of the Museum of Comparative Zoology, 23, 199 - 244, pls. 1 - 2.", "Dall, W. H. (1889) Reports on the results of dredgings, under the supervision of Alexander Agassiz, in the Gulf of Mexico (1877 - 78) and in the Caribbean Sea (1879 - 80), by the U. S. Coast Survey Steamer ' Blake'. Bulletin of the Museum of Comparative Zoology, 18, 1 - 492, pls. 10 - 40.", "Numanami, H. (1996) Taxonomic study on Antarctic gastropods collected by Japanese Antarctic research expeditions. Memoirs of National Institute of Polar Research (E) 39, [v] + 244 pp.", "Watson, R. B. (1886) Report on the Scaphopoda and Gasteropoda collected by H. M. S. Challenger during the years 1873 - 1876. Report on the scientific results of the voyage of H. M. S. Challenger during the years of 1873 - 1876, 15 (42), 1 - 680, 53 pls."]}