Glypteuthria meridionalis E. A. Smith 1881
Glypteuthria meridionalis (E. A. Smith, 1881) Figures 8 A–L, 9A–D Euthria meridionalis E. A. Smith, 1881: 29, pl. 4, fig. 6; Rochebrune & Mabille, 1889: H61. Euthria Glypteuthria meridionalis Smith. Strebel, 1905: 627, pl. 21, figs. 11, 11a–d; Melvill & Standen, 1914: 122. Glypteuthria merid...
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Zenodo
2016
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| Online Access: | https://dx.doi.org/10.5281/zenodo.5662387 https://zenodo.org/record/5662387 |
| Summary: | Glypteuthria meridionalis (E. A. Smith, 1881) Figures 8 A–L, 9A–D Euthria meridionalis E. A. Smith, 1881: 29, pl. 4, fig. 6; Rochebrune & Mabille, 1889: H61. Euthria Glypteuthria meridionalis Smith. Strebel, 1905: 627, pl. 21, figs. 11, 11a–d; Melvill & Standen, 1914: 122. Glypteuthria meridionalis Smith. Thiele, 1912, pl. 13, fig. 6, pl. 16, fig. 17 (radula); Powell, 1951: 138; Carcelles & Williamson, 1951: 297; Dell, 1972: 36, fig. 10; Castellanos, 1992: 19, pl. 1, fig. 11. Buccinulum meridionalis (E. A. Smith, 1881). Forcelli, 2000: 92, fig. Type material. Two syntypes, NHMUK 19.10.15.18–19 collected by HMS ALERT. Dell (1972: 36, fig. 10) illustrated the larger specimen as holotype, which constitutes a lectotype designation according to ICZN article 74. Type locality. Portland Bay, St. Andrews Sound, 10 fms. [18.2 m] depth, and Sandy Point [Chile] in 9–10 fms. [16.4–18.2 m] depth. Description . Shell small, up to 11.5 mm in height, fusiform, of 6 slightly convex whorls; protoconch of about 1 1/2 convex whorls, with 5 to 6 spiral threads; suture impressed, slightly channelled; aperture elliptic; siphonal canal rather deep and short; parietal callus thin. Spiral ornamentation of 5 flat threads per whorl, about 20 on the last; axial sculpture of 14 rounded ribs (varices) that develop nodes when crossing the spiral threads. Periostracum translucent, very thin, producing a scaly appearance on the sulci between threads. Color brownish or reddish. Operculum (Fig. 8 L) pale yellowish, ovate-elliptical, nucleus subterminal, thick rim, small attachment area towards left side. Radula (Figs 9 A, B) rachiglossate, central tooth with three cusps, the central cusp largest; lateral teeth with two large curved, hook-shaped cusps with an obsolete cusp close to the inner one. Penis large, flat, thick with a small papilla on the tip (Figs 9 C–D). Material examined. Argentina: 1 spm., Isla Becasses, Ushuaia, (MACN-In 35213); 1 spm., 53°39’24”S, 70°55’30”W, 24 m depth, (USNM 898494); 3 spms., 53°39’S, 70°55’W, 20 m depth, (USNM 898491); 3 spms., Ushuaia, (MACN-In 40516); 2 spms., Bahia Ensenada, Ushuaia, (MACN-In 40517); 2 spms., 54°17.647”S, 66°15.376”W to 54°17.346”S, 66°15.531”W, 56 m depth, with bottom trawl, CAV2014, St. 22/48, (MACN-In 40518); 2 shells, Bahia Orange, Tierra del Fuego, Mission du Cap Horn , (MACN-In 13914-1). Chile: 3 shells, Punta Arenas, (MACN-In 12382). Distribution. Only known from Tierra del Fuego and environs including the Straits of Magellan. Remarks. The shell is similar to M. martensi however, the protoconch of this species is distinctive, with axial threads instead of the typical spirals. Strebel (1905) included four Magellanic species in his new genus, i.e. the type G. meridionalis, “ G.” martensi , “ G.” agnesia and “ G.” k o b e l t i . The only species belonging to Glypteuthria is the type species. G. agnesia is a synonym of Meteuthria martensi and G. k o b e l t i belongs in a different new genus proposed here: Falsimacme . Powell (1951: 138, 1960: 148), Castellanos (1970: 98) and Dell (1972: 36) included Euthria acuminata Smith, 1915 in Glypteuthria however, this is a columbellid (according to the radula illustrated in Fernández & Castellanos, 1973), probably belonging in the genus Amphissa (sensu Rios, 1994: 124). Castellanos (1970) included E. agnesia Strebel, 1905 in Glypteuthria . Fernández & Castellanos (1973) included what they called E. agnesia Strebel, 1905 in the columbellid genus Pyrene . Later Castellanos (1982) described the new species Amphissa cancellata (Columbellidae) to include this material that she considered previously as E. agnesia . Dell (1972) suggested Lachesis euthrioides Melvill & Standen, 1898 as a synonym, however this is a valid species, dealt with here in the new Prosiphiinae genus Argeneuthria . : Published as part of Pastorino, Guido, 2016, Revision of the genera Pareuthria Strebel, 1905, Glypteuthria Strebel, 1905 and Meteuthria Thiele, 1912 (Gastropoda: Buccinulidae) with the description of three new genera and two new species from Southwestern Atlantic waters, pp. 301-344 in Zootaxa 4179 (3) on pages 315-317, DOI: 10.11646/zootaxa.4179.3.1, http://zenodo.org/record/256431 : {"references": ["Smith, E. A. (1881) Account of the Zoological collections made during the Survey of H. M. S. \" Alert \" in the Straits of Magellan and on the Coast of Patagonia. IV. Mollusca and molluscoidea. Proceedings of the Zoological Society of London, 1881, 22 - 44.", "Rochebrune, A. T. D. & Mabille, J. (1889) Mollusques, Mission Scientifique du Cap Horn. 1882 - 1883. Vol. 6. Zoologie 2. Gauthier-Villars et fils, Paris, 143 pp.", "Strebel, H. (1905) Beitrage zur Kenntnis der Molluskenfauna der Magalhaen-Provinz. 3. Zoologischen Jahrbuchern. Abteilung fur Systematik, Geographie, und Biologie der Tiere, 22 (6), 575 - 666.", "Melvill, J. C. & Standen, R. (1914) Notes on Mollusca collected in the northwest Falklands by Mr. Rupert Vallentin, F. L. S. with descriptions of six new species. Annals and Magazine of Natural History, 8 (13), 109 - 136.", "Thiele, J. (1912) Die Antarktischen Schnecken und Muscheln, Deutsche Sudpolar-Expedition (1901 - 1903) Im auftrage des Reichsamtes des Innern Herausgegeben von Erich von Drygalski Leiter der Expedition. Vol. 13. In: Zoologie 5 (2). Druck und Verlag von Georg Reimer, Berlin, pp. 183 - 286", "Powell, A. W. B. (1951) Antarctic and subantarctic Mollusca: Pelecypoda and Gastropoda. Discovery Reports, 26, 47 - 196. http: // dx. doi. org / 10.5962 / bhl. part. 16335", "Carcelles, A. & Williamson, S. (1951) Catalogo de los moluscos marinos de la provincia magallanica. Revista del Instituto Nacional de Investigacion de las Ciencias Naturales, Ciencias Zoologicas, 2 (5), 225 - 383.", "Dell, R. K. (1972) Notes on the nomenclature of some Mollusca from Antarctica and southern South America. Records of the Dominion Museum, 8 (3), 21 - 42.", "Castellanos, Z. J. A. de (1992) Catalogo descriptivo de la malacofauna marina magallanica 7. Neogastropoda Columbellidae = Pyrenidae, Cominellidae y Fasciolariidae. Comision de Investigaciones Cientificas de la Provincia de Buenos Aires, La Plata, 41 pp.", "Forcelli, D. O. (2000) Moluscos magallanicos, guia de moluscos de Patagonia y sur de Chile. Vazquez Mazzini, Buenos Aires, 200 pp.", "Castellanos, Z. J. A. de (1970) Catalogo de los moluscos marinos bonaerenses. Anales de la Comision de Investigaciones Cientificas de la provincia de Buenos Aires, 8, 9 - 365.", "Smith, E. A. (1915) Mollusca Part I-Gastropoda Prosobranchia, Scaphopoda and Pelecypoda. British Antarctic (\" Terra Nova \") Expedition, 1910. Natural History Report, Zoology, 2 (4), 61 - 112.", "Fernandez, D. & Castellanos, Z. J. A. de (1973) Novedosas adiciones al genero Pyrene (Moll. Gastropoda). Neotropica, 19 (60), 135 - 137.", "Rios, E. C. (1994) Seashells of Brazil. 2 nd Edition. Editora da Fundacao Universidade do Rio Grande, Rio Grande, 368 pp.", "Castellanos, Z. J. A. de (1982) Los Pyramidellidae de la Republica Argentina (Moll. Entomotaeniata). Comunicaciones del Museo Argentino de Ciencias Naturales \" Bernardino Rivadavia \" e Instituto Nacional de Investigacion de las Ciencias Naturales, Hidrobiologia, 2 (7) 61 - 85.", "Melvill, C. J. & Standen, R. (1898) Notes on a collection of marine shells from Lively Island, Falklands, with list of species. Journal of Conchology, 9, 97 - 105."]} |
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