Melanella sp. 2 Bowdich 1822
Melanella sp. 2 (Figure 18 A–F) Material examined. Brazil: Ceará: (03°30′51″S 37°59′28″W, 384 m), RV Natureza , 07/xi/2001: MNRJ 35267 † [1 dd]; Alagoas: (10°06′35″S 35°46′41″W, 720 m), RV Natureza , 16/xii/2001: MNRJ 35206 † [1 dd]; Rio Grande do Sul: Off Solidão (30°46′S 49°07′W, 176 m), coll. RV...
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2021
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Online Access: | https://dx.doi.org/10.5281/zenodo.4543006 https://zenodo.org/record/4543006 |
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Open Polar |
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Biodiversity Taxonomy Animalia Mollusca Gastropoda Caenogastropoda Eulimidae Melanella Melanella sp. 2 |
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Biodiversity Taxonomy Animalia Mollusca Gastropoda Caenogastropoda Eulimidae Melanella Melanella sp. 2 Souza, Leonardo Santos De Pimenta, Alexandre Dias Barros, José Carlos Nascimento De Melanella sp. 2 Bowdich 1822 |
topic_facet |
Biodiversity Taxonomy Animalia Mollusca Gastropoda Caenogastropoda Eulimidae Melanella Melanella sp. 2 |
description |
Melanella sp. 2 (Figure 18 A–F) Material examined. Brazil: Ceará: (03°30′51″S 37°59′28″W, 384 m), RV Natureza , 07/xi/2001: MNRJ 35267 † [1 dd]; Alagoas: (10°06′35″S 35°46′41″W, 720 m), RV Natureza , 16/xii/2001: MNRJ 35206 † [1 dd]; Rio Grande do Sul: Off Solidão (30°46′S 49°07′W, 176 m), coll. RV Prof. Wladimir Besnard , 27/i/1972: MORG 17624 † [1 dd]. Description. Shell conical, slightly curved, reaching about 8.5 mm long, 3.3 mm wide. Larval shell broken. Teleoconch with about 8.0 whorls, slightly convex outline, convexity accentuated in the lower region of each whorl; suture well demarcated, almost straight; subsutural zone indistinct; surface smooth, incremental scars well demarcated, appearing in intervals of about 1.1 whorl at the last two whorls. Last whorl about 50% of the shell length; base slightly truncated. Aperture high, pear shaped, acute posteriorly and rounded anteriorly; outer lip thin, opisthocline, sinuous, straight near the suture and strongly projecting, reaching the maximum projection at the mid of its height; inner lip thick, sinuous, sloping, reflected and well demarcated. Not umbilicate. Shell vitreous, colorless. Measurements. MNRJ 35206†, 8 whorls (apex broken), SL= 8.5 mm; BWL= 4.5 mm; AL= 2.8 mm; SW= 3.3 mm; AW= 2.0 mm. Remarks. The protoconch is broken in the three shells examined, but the relatively wide and solid shell, with a wide aperture and thick inner lip are characteristic enough to be worth noting (Figure 18 A–F). Melanella sp. 2 resembles M. doederleini (Figure 11 A–I) in shape, but has bigger dimensions and a much more elongated aperture. Even with the apex broken, specimens of Melanella sp. 2 reaches 8 whorls and 8.5 mm long, while M. doederleini reaches 10 whorls and 3.6 mm long. Melanella sp. 2 can also be distinguished from M. anapetes sp. nov. (Figure 16 A–G) by the wider aperture, bigger dimensions, thicker inner lip and the curved spire. Geographical distribution. Brazil: Ceará, Alagoas, Rio Grande do Sul (present study). Bathymetric distribution. From 176 m to 720 m. : Published as part of Souza, Leonardo Santos De, Pimenta, Alexandre Dias & Barros, José Carlos Nascimento De, 2021, Revision of the deep-sea Eulimidae (Gastropoda, Caenogastropoda) from off Northeast Brazil, pp. 451-504 in Zootaxa 4927 (4) on pages 482-485, DOI: 10.11646/zootaxa.4927.4.1, http://zenodo.org/record/4542923 : {"references": ["Tryon, G. W. (1886) Manual of Conchology. Vol. 8. Philadelphia, Pennsylvania, 461 pp., 79 pls.", "Clarke, A. H. (1974) Molluscs from Baffin Bay and the northern North Atlantic Ocean. Publications in Biological Oceanography, National Museum of Natural Sciences of Canada, 7, 1 - 23."]} |
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Text |
author |
Souza, Leonardo Santos De Pimenta, Alexandre Dias Barros, José Carlos Nascimento De |
author_facet |
Souza, Leonardo Santos De Pimenta, Alexandre Dias Barros, José Carlos Nascimento De |
author_sort |
Souza, Leonardo Santos De |
title |
Melanella sp. 2 Bowdich 1822 |
title_short |
Melanella sp. 2 Bowdich 1822 |
title_full |
Melanella sp. 2 Bowdich 1822 |
title_fullStr |
Melanella sp. 2 Bowdich 1822 |
title_full_unstemmed |
Melanella sp. 2 Bowdich 1822 |
title_sort |
melanella sp. 2 bowdich 1822 |
publisher |
Zenodo |
publishDate |
2021 |
url |
https://dx.doi.org/10.5281/zenodo.4543006 https://zenodo.org/record/4543006 |
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ENVELOPE(-62.167,-62.167,-64.717,-64.717) ENVELOPE(-63.483,-63.483,-64.826,-64.826) |
geographic |
Baffin Bay Canada Barros Besnard |
geographic_facet |
Baffin Bay Canada Barros Besnard |
genre |
Baffin Bay Baffin Bay Baffin North Atlantic |
genre_facet |
Baffin Bay Baffin Bay Baffin North Atlantic |
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Open Access info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5281/zenodo.4543006 https://doi.org/10.11646/zootaxa.4927.4.1 https://doi.org/10.5281/zenodo.4542973 https://doi.org/10.5281/zenodo.4542953 https://doi.org/10.5281/zenodo.4542967 https://doi.org/10.5281/zenodo.4543007 |
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ftdatacite:10.5281/zenodo.4543006 2023-05-15T15:35:08+02:00 Melanella sp. 2 Bowdich 1822 Souza, Leonardo Santos De Pimenta, Alexandre Dias Barros, José Carlos Nascimento De 2021 https://dx.doi.org/10.5281/zenodo.4543006 https://zenodo.org/record/4543006 unknown Zenodo http://zenodo.org/record/4542923 http://publication.plazi.org/id/FFDFFFDAFFBEFFDEFFC88420FF8F4468 http://zoobank.org/AED51D9E-1751-4010-A8E1-B72AE428821A https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/zootaxa.4927.4.1 http://zenodo.org/record/4542923 http://publication.plazi.org/id/FFDFFFDAFFBEFFDEFFC88420FF8F4468 https://dx.doi.org/10.5281/zenodo.4542973 https://dx.doi.org/10.5281/zenodo.4542953 https://dx.doi.org/10.5281/zenodo.4542967 http://zoobank.org/AED51D9E-1751-4010-A8E1-B72AE428821A https://dx.doi.org/10.5281/zenodo.4543007 https://zenodo.org/communities/biosyslit Open Access info:eu-repo/semantics/openAccess Biodiversity Taxonomy Animalia Mollusca Gastropoda Caenogastropoda Eulimidae Melanella Melanella sp. 2 Text Taxonomic treatment article-journal ScholarlyArticle 2021 ftdatacite https://doi.org/10.5281/zenodo.4543006 https://doi.org/10.11646/zootaxa.4927.4.1 https://doi.org/10.5281/zenodo.4542973 https://doi.org/10.5281/zenodo.4542953 https://doi.org/10.5281/zenodo.4542967 https://doi.org/10.5281/zenodo.4543007 2021-11-05T12:55:41Z Melanella sp. 2 (Figure 18 A–F) Material examined. Brazil: Ceará: (03°30′51″S 37°59′28″W, 384 m), RV Natureza , 07/xi/2001: MNRJ 35267 † [1 dd]; Alagoas: (10°06′35″S 35°46′41″W, 720 m), RV Natureza , 16/xii/2001: MNRJ 35206 † [1 dd]; Rio Grande do Sul: Off Solidão (30°46′S 49°07′W, 176 m), coll. RV Prof. Wladimir Besnard , 27/i/1972: MORG 17624 † [1 dd]. Description. Shell conical, slightly curved, reaching about 8.5 mm long, 3.3 mm wide. Larval shell broken. Teleoconch with about 8.0 whorls, slightly convex outline, convexity accentuated in the lower region of each whorl; suture well demarcated, almost straight; subsutural zone indistinct; surface smooth, incremental scars well demarcated, appearing in intervals of about 1.1 whorl at the last two whorls. Last whorl about 50% of the shell length; base slightly truncated. Aperture high, pear shaped, acute posteriorly and rounded anteriorly; outer lip thin, opisthocline, sinuous, straight near the suture and strongly projecting, reaching the maximum projection at the mid of its height; inner lip thick, sinuous, sloping, reflected and well demarcated. Not umbilicate. Shell vitreous, colorless. Measurements. MNRJ 35206†, 8 whorls (apex broken), SL= 8.5 mm; BWL= 4.5 mm; AL= 2.8 mm; SW= 3.3 mm; AW= 2.0 mm. Remarks. The protoconch is broken in the three shells examined, but the relatively wide and solid shell, with a wide aperture and thick inner lip are characteristic enough to be worth noting (Figure 18 A–F). Melanella sp. 2 resembles M. doederleini (Figure 11 A–I) in shape, but has bigger dimensions and a much more elongated aperture. Even with the apex broken, specimens of Melanella sp. 2 reaches 8 whorls and 8.5 mm long, while M. doederleini reaches 10 whorls and 3.6 mm long. Melanella sp. 2 can also be distinguished from M. anapetes sp. nov. (Figure 16 A–G) by the wider aperture, bigger dimensions, thicker inner lip and the curved spire. Geographical distribution. Brazil: Ceará, Alagoas, Rio Grande do Sul (present study). Bathymetric distribution. From 176 m to 720 m. : Published as part of Souza, Leonardo Santos De, Pimenta, Alexandre Dias & Barros, José Carlos Nascimento De, 2021, Revision of the deep-sea Eulimidae (Gastropoda, Caenogastropoda) from off Northeast Brazil, pp. 451-504 in Zootaxa 4927 (4) on pages 482-485, DOI: 10.11646/zootaxa.4927.4.1, http://zenodo.org/record/4542923 : {"references": ["Tryon, G. W. (1886) Manual of Conchology. Vol. 8. Philadelphia, Pennsylvania, 461 pp., 79 pls.", "Clarke, A. H. (1974) Molluscs from Baffin Bay and the northern North Atlantic Ocean. Publications in Biological Oceanography, National Museum of Natural Sciences of Canada, 7, 1 - 23."]} Text Baffin Bay Baffin Bay Baffin North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Baffin Bay Canada Barros ENVELOPE(-62.167,-62.167,-64.717,-64.717) Besnard ENVELOPE(-63.483,-63.483,-64.826,-64.826) |