117,613 research outputs found
Description of Chone usticensis sp. nov. (Polychaeta, Sabellidae) from the Mediterranean Sea
No full textA new species of Chone (Sabellidae) from the coast of Ustica Island (Mediterranean Sea, north of Sicily) is described. The species, named Chone usticensis sp. nov., is similar to another Mediterranean species, C. filicaudata, in having a long pygidial filiform appendage, but is distinct from this species especially in the peristomium, collar, and in thoracic paleate chaetae shape. A discussion on the presence of the radiolar appendages within the genus Chone is also given. Copyright © 2006 Magnolia Press
Description of Chone usticensis sp nov (Polychaeta, Sabellidae) from the Mediterranean Sea
No full textA new species of Chone (Sabellidae) from the coast of Ustica Island ( Mediterranean Sea, north of Sicily) is described. The species, named Chone usticensis sp. nov., is similar to another Mediterranean species, C. filicaudata, in having a long pygidial filiform appendage, but is distinct from this species especially in the peristomium, collar, and in thoracic paleate chaetae shape. A discussion on the presence of the radiolar appendages within the genus Chone is also give
Especies de Chone Kroyer, 1856 (Polychaeta: Sabellidae) del Atlántico Oriental Central y Mar Mediterráneo
No full textA neotype specimen is designated for Chone acustica (Claparède, 1870) with a full description. The original descriptions of Chone arenicola Langerhans, 1880 and Chone collaris Langerhans, 1880, both from Madeira, did not include some details and incomplete or misleading information was provided, so both species are redescribed. Amendments to the description of Chone longiseta Giangrande, 1992 are also given together with the methyl green staining pattern of Chone usticensis Giangrande et al. 2006. Two new species are described: Chone gambiae sp. nov., from the Gulf of Naples and Chone dunerificta sp. nov., from the Gulf of Salerno. This study shows the distribution of Chone duneri Krøyer, 1856, and Chone filicaudata Southern, 1914, to be restricted to the Arctic seas and North Atlantic Ocean, respectively. Records from the Mediterranean Sea are found to be erroneous.Se designó el neotipo de Chone acustica (Claparède, 1870). Las descripciones originales de Chone arenicola Langerhans, 1880 y Chone collaris Langerhans, 1880, ambas de Madeira, no incluyen carácteres diagnósticos y la información proporcionada en otras contribuciones es incompleta, en este estudio ambas especies fueron redescritas. Se adicionaron carácteres diagnósticos a la descripción de Chone longiseta Giangrande, 1992, y se describió el patrón de tinción con verde de metilo de Chone usticensis Giangrande et al. 2006. Se describieron dos nuevas especies: Chone gambiae sp. nov., del Golfo de Nápoles y Chone dunerificta sp. nov., del Golfo de Salerno. Se restringió la distribución de Chone duneri Krøyer, 1856 para los mares del Ártico y Chone filicaudata Southern, 1914 para el Océano Atlántico Norte. Los registros de ambas especies para el Mar Mediterráneo son erróneos
Chone murmanica Lukasch 1910
No full textChone murmanica Lukasch, 1910 Figure 10 Chone murmanica Lukasch, 1910: 21 –26. Material examined. Non-type material. Arctic Ocean [LACM – AHF], Beaufort Sea, Northwest of Cape Halkett, Alaska, Coll. Andrew Carey: 948 –04 (3); 835 –04 (141); 836 –03 (145). [ZIRAS 38178] Franz-Joseph Land, September 29, 1970, 28–30 m, pebble and sand (2). Diagnosis. Body elongated, cylindrical. Body length 18 mm. Branchial crown length 4 mm. Branchial lobes short. Radiolar tips extra long. Narrow flanges. Anterior peristomial ring lobe exposed beyond collar (aprl), bilobed (Figs 10 B–C). Ventral collar margin higher than dorsal one, bilobed (Figs 10 B–C). Entire length of mid-dorsal collar margins forms a very broad gap (Fig. 10 A). Dorsal pockets well developed (Fig. 10 A). Peristomial eyes present (pe) (Figs 10 B–C). Paleate chaetae with long mucro (Figs 10 D–E); thoracic uncini with four rows of teeth (Fig. 10 F); thoracic narrowly hooded chaetae (Figs 10 K–L). Glandular ridge on chaetiger 2 narrow. Ventral thoracic shields well developed. Abdominal segments: 26. Abdominal chaetae narrowly hooded (Figs 10 M–N); posterior abdominal uncini modified with six rows of teeth (Figs. 10 H–J). Pygidium with triangular posterior margin. Methyl green staining. Dorsally there is no colour, only lateral spots in the collar, laterally, the following segments have glandular spots (Fig. 10 A). Ventrally: collar segment stained uniformly, except the anterior margin, and the area where the otoliths occurs (Figs 10 B–C). Gametes. Spermatozoa with barrel-shaped nucleus, triangular, short acrosome, two small, rounded mitochondria (Fig. 10 G). Remarks. Cochrane (2000) stated that the illustration of the anterior end of C. murmanica, depicted in Lukasch (1910) indeed closely resembles the drawing of C. paucibranchiata by Kr ø yer. Both taxa have three pairs of radioles and a characteristically pronounced dorsal gap in the collar. Chone paucibranchiata has been regarded as a junior synonym of Chone infundibuliformis Kr ø yer, 1856 after Malmgren (1866), but Banse (1972) stated that C. paucibranchiata has well developed ventral glandular shields (absent in C. infundibuliformis); and that its palmate membrane extends at least one-third of the branchial crown length (two thirds in C. infundibuliformis). If C. paucibranchiata is regarded as a valid species, it would have priority over C. murmanica, but examination of topotype material is necessary in order to confirm the synonym. Among species of Chone included in this revision, C. murmanica is unique by having a ventral shield of collar in trapezoidshaped (Table 2).Published as part of Tovar-Hernández, María Ana, 2007, On some species of Chone Krøyer, 1856 (Polychaeta: Sabellidae) from world-wide localities, pp. 31-68 in Zootaxa 1518 on pages 49-50, DOI: 10.5281/zenodo.17737
Figure 16. Chone trilineata n in Revision of Chone Krøyer, 1856 (Polychaeta: Sabellidae) from North America and descriptions of four new species
No full textFigure 16. Chone trilineata n. sp. (A) Body, lateral view; (B, D) anterior end, ventral view; (C) same, dorsal view; (E) same, dorsolateral view; (F, G) posterior abdominal uncini; (H–J) paleate chaetae; (K) thoracic uncinus; (L) abdominal elongate narrowly hooded chaetae. (A) [PC-RR, Sta. B-13]; (B, C) [LACM-AHF, holotype]; (D–L) [LACM-AHF, paratype].Published as part of Tovar-Hernández, María Ana, 2007, Revision of Chone Krøyer, 1856 (Polychaeta: Sabellidae) from North America and descriptions of four new species, pp. 511-566 in Journal of Natural History 41 (9-12) on page 556, DOI: 10.1080/00222930701250912, http://zenodo.org/record/523395
Chone kroyerii Sars 1862
No full text<i>Chone kroyerii</i> Sars, 1862 <p>Figure 8</p> <p> <i>Chone kr</i> ø <i>yerii</i> Sars, 1862: 35 –37.— Cochrane, 2000: 144 –145.</p> <p> <b>Material examined.</b> <i>Non-type material</i>. <b>Bogestr</b> Ø <b>mmen</b> [ZMO] (1).</p> <p> <i>Additional material</i>. <i>Chone duneri</i> Malmgren, 1867 [ZMUC POL –1755, Norway]. <i>Chone infundibuliformis</i> Kr ø yer, 1856 [ZMUC POL –1749, paralectotype].</p> <p> Description. <i>Colour</i>, <i>body shape</i>, <i>and size</i>. Body cream-coloured, no branchial crown. Trunk cylindrical. Body length 24 mm, width 0.4 mm. Tube unknown.</p> <p> <i>Branchial lobes and branchial crown</i>. Insertion of the branchial crown not exposed beyond collar (Fig. 8 B).</p> <p> <i>Peristomium</i>. Anterior peristomial ring lobe (<i>aprl</i>) not exposed beyond collar, distally entire, triangular (Fig. 8 B). Posterior peristomial ring collar: antero-dorsal, ventral and lateral margins entire, ventral margin higher than dorsal (Fig. 8 D); longitudinal grooves on dorsal side of collar; entire length of mid-dorsal collar margins forms a broad gap (Fig. 8 B). Dorsal pockets well developed. Ventral shield of collar rectangular (not easily discernible). Ratio of posterior peristomial ring collar length <i>versus</i> chaetiger 2 length, in lateral view: 2:1.</p> <p> <i>Thorax</i>. Chaetigers 2 to 8: notopodia– two irregular rows of elongate, narrowly hooded chaetae; one anterior row with narrow bayonet chaetae (Fig. 8 H); two posterior rows with symmetrical; paleate chaetae with a medium-sized mucro (Figs 8 E–G); neuropodia– two irregular rows of acicular uncini per torus, main fang surmounted by three rows of teeth (Fig. 8 J), second tooth enlarged, located in the midline, dentition covering one quarter of the main fang length. Glandular ridge on chaetiger 2: narrow.</p> <p> <i>Abdomen</i>. Abdominal segments: 51. Anterior abdominal uncini with the main fang surmounted by five rows of teeth equal in size (Fig. 8 K), occupying less than half the length of main fang, main fang not extending beyond breast, breast rectangular. Posterior abdominal uncini with four rows of teeth equal in size (Fig. 8 L). Very long, narrowly hooded chaetae (Fig. 8 I). Pygidium with triangular posterior margin (Fig. 8 D).</p> <p> <i>Gametes</i>. Male with spermatozoa in thorax and abdomen: acrosome elongate, triangular, nucleus barrelshaped, two rounded mitochondria (Fig. 8 C).</p> <p> <i>Methyl green staining</i>. Collar dorsal and lateral surfaces completely stained (Figs 8 B, D), collar ventral surface coloured only the base of the ventral collar shield (Fig. 8 A), other areas with small dark points. Thorax dorsally less stained than ventrally (Fig. 8 B).</p> <p> <b>Remarks.</b> Sars (1862) stated that the specimens resembled <i>Chone paucibranchiata</i> (Kr ø yer, 1856) to such an extent that he was long predisposed to assume that taxon; however, the number of radioles is not a character to differentiate species and the biannulate condition in thoracic segments is a common pattern in <i>Chone</i>. <i>Chone kroyerii</i> was referred to <i>C. infundibuliformis</i> by Malmgren (1866) and Fauvel (1927), but Cochrane (2000) recognized this taxon as valid. <i>Chone kroyerii</i>, <i>C. duneri</i> and <i>C. infundibuliformis</i> have anterior and posterior abdominal uncini with similar shape (not modified); <i>C. kroyerii</i> and <i>C. infundibuliformis</i> have the branchial lobes not exposed beyond collar (exposed in <i>C. duneri</i>); <i>C. kroyerii</i> has a broad collar gap (narrow in <i>C. infundibuliformis</i>), and the ventral margin of collar higher than <i>C. infundibuliformis</i>. Among species of <i>Chone</i> included in this revision, <i>C. kroyerii</i> is unique by having a rectangular ventral shield of collar (Table 2).</p>Published as part of <i>Tovar-Hernández, María Ana, 2007, On some species of Chone Krøyer, 1856 (Polychaeta: Sabellidae) from world-wide localities, pp. 31-68 in Zootaxa 1518</i> on pages 45-46, DOI: <a href="http://zenodo.org/record/177378">10.5281/zenodo.177378</a>
Chone
No full text<i>Chone</i> sp. British Virgin Islands <p>Figures 16</p> <p> <b>Material examined.</b> <i>Non-type material</i>. <b>British Virgin Islands</b> [LACM – AHF] AF00–05 White Bay, 2 finger reefs closest to beach house, Coll. K. Fitzhugh, July 4, 2000, 40 m offshore, scraping of sand and sparse filamentous algae (<i>Ceramium</i>, <i>Polysiphonia</i>) on flat coral boulder, 1 m (1). AF00–12 Long Point, 70 m SE of dock, above crest of reef, more protected area in a furrow on the bottom, covered with fine algae growing on small pebbles, Coll. T. Zimmerman and G. Hendler, hand, July 5, 2000, 18° 29.15’ N, 64° 34.97’ W, 0.6–0.8 m (1). <b>Mexican Caribbean</b> [ECOSUR] Bajo Pepito, Isla Mujeres, Quintana Roo, Mexico; in <i>Stypopodium zonata</i>, Coll. M. Díaz, February 1997 (2); February 5, 1997 (3); April 1997 (9); in <i>Sargassum vulgaris</i>, May 1997 (1); July 1997 (4). Xcayal, lighthouse, B 110, November 4, 1990 (2). [LACM – AHF] LH01–665, Isla Contoy, South point, West side, green felt on coral rubble, rock, 0.33 m, Coll. L. Harris, March 0 2, 2001 (2). <b>Bahamas</b> [LACM – AHF] LH03–231, Sta. 45, Exuma Cays, Basil Minn’s Cave, marine entrance pool, algae and sediment scooped up from bottom, strong H2S odor from black silt, January 11, 2003 (1). LH03–157, Sta. 31, Exuma Cays, Stocking Cay, 6 m south of entrance to Mystery Cave, Coll. T. Haney, January 9, 2003, 2 m (2).</p> <p> <i>Additional material</i>. <i>Chone americana</i> Day, 1973 [USNM 43137, paratype]. <i>Chone filicaudata</i> Southern, 1914 [BMNH 1914.12.12.25, syntype].</p> <p> <b>Description.</b> <i>Colour</i>, <i>body shape</i>, <i>and size</i>. Body cream coloured. Trunk cylindrical, posterior abdomen slightly depressed dorso-ventrally. Body length 3–6 mm, width 0.5–1.5 mm. Tubes constructed with fine sand.</p> <p> <i>Branchial lobes and branchial crown</i>. Insertion of the branchial lobes exposed beyond collar. Branchial crown length 1.2–2.3 mm. Radioles: 5–6 pairs. All pinnules long. Radiolar tips medium-sized (Fig. 16 A). Palmate membrane extends a half the length of the branchial crown (Fig. 16 A). Lateral flanges broad. Dorsal lips three times longer than wide, erect, without a discernable longitudinal ridge. Ventral lips broad, as long as wide, about one half of the dorsal lips length. Ventral radiolar appendages: two pairs, the inner one about one quarter the length of the branchial crown length (Fig. 16 A), others about one half of the branchial crown length.</p> <p> <i>Peristomium</i>. Anterior peristomial ring lobe exposed beyond collar, distally entire, triangular (Fig. 16 A). Antero-dorsal, lateral, and ventral margins of posterior peristomial ring collar entire, ventral slightly higher than dorsal (Figs 16 A); entire length of mid-dorsal collar margins forms a narrow gap, dorsal pockets well developed. Ventral collar shield swollen, horseshoe-shaped, two times wider than long. Ratio of posterior peristomial ring collar length <i>versus</i> chaetiger 2 length, in lateral view: 1.5:1. Otoliths in peristomium.</p> <p> <i>Thorax</i>. Elongate, narrowly hooded chaetae; narrowly hooded bayonet chaetae; symmetrical; paleate chaetae with medium-length mucro. One row of acicular uncini, second tooth enlarged, located offset the midline, dentition covering three quarters of the main fang length (Figs 16 C–D). Glandular ridge on chaetiger 2: narrow.</p> <p> <i>Abdomen</i>. Abdominal segments: 23. Anterior segments: 3–4 elongate, narrowly hooded chaetae, upper row chaetae half as long as lower row ones; uncini with the main fang surmounted by four irregular rows of unequal in size teeth (basal median tooth of basal row enlarged), occupying one half of the main fang length (Fig. 16 E), older (dorsal most) uncini smaller than younger ones (ventral most), main fang not extending beyond breast, breast rectangular. Posterior segments: 1–2 very long, narrowly hooded chaetae (Figs 16 B, F), 25% longer than in anterior segments; modified uncini with the main fang surmounted by eight regular rows of teeth equal in size, occupying three quarters of the main fang length (Fig. 16 G), older (dorsal most) uncini smaller than younger uncini (ventral most), main fang not extending beyond breast, breast rectangular. Pygidium with triangular posterior margin, and short cirrus (Fig. 13 B).</p> <p> <i>Gametes</i>. Females with oocytes (<i>oo</i>) in anterior thoracic chaetigers, diameter 0.75– 0.15 mm.</p> <p> <i>Methyl green staining</i>. Anterior end of the ventral collar shield not coloured, posterior end dark. Body uniformly coloured dorsal and ventrally.</p> <p> <b>Remarks.</b> <i>Chone americana</i> and <i>C.</i> sp. British Virgin Islands are unique among Western Atlantic <i>Chone</i> species by having a pygidial cirrus: <i>C. americana</i> differs from <i>C.</i> sp. British Virgin Islands because it has long radiolar tips (short in <i>C.</i> sp. British Virgin Islands), anterior peristomial ring lobe and branchial lobes not exposed above collar (both exposed in <i>C.</i> sp. British Virgin Islands), and sperm with barrel-shaped nucleus (spherical in <i>C.</i> sp. British Virgin Islands). Another species with pygidial cirrus is <i>C. filicaudata</i> from Ireland, but this species have the anterior peristomial ring lobe incised, while it is entire in <i>C. americana</i>. The anterior abdominal uncini in <i>Chone</i> sp. British Virgin Islands and <i>C. americana</i> have four irregular rows of unequal in size teeth (basal median tooth of basal row enlarged), occupying one half of the main fang length.</p>Published as part of <i>Tovar-Hernández, María Ana, 2007, On some species of Chone Krøyer, 1856 (Polychaeta: Sabellidae) from world-wide localities, pp. 31-68 in Zootaxa 1518</i> on pages 58-60, DOI: <a href="http://zenodo.org/record/177378">10.5281/zenodo.177378</a>
Chone letterstedti Kinberg 1867
No full text<i>Chone letterstedti</i> (Kinberg, 1867) <p>Figure 9</p> <p> <i>Parachonia letterstedti</i> Kinberg, 1867: 73, Pl. 28, Fig. 6.— Johansson, 1925: 27, Figs 9–11. <i>Chone letterstedti</i>.— Day, 1967: 777, Fig. 37.7 g –k.</p> <p> <b>Material examined.</b> <i>Type material</i>. <b>South Africa</b> [SMNH 576, holotype], Cap. Coll. Wahlberg.</p> <p> <i>Additional material</i>. <i>Chone aurantiaca</i> (Johnson, 1901) [MCZ 1933, holotype]. <i>Chone gracilis</i> Moore, 1906 [USNM 5513, holotype]. <i>Chone infundibuliformis</i> Kr ø yer, 1856 [ZMUC POL –1749, lectotype]. <i>Chone magna</i> (Moore, 1923) [USNM 17281, holotype]. <i>Chone mollis</i> Bush <i>in</i> Moore, 1904 [YPM 2793, holotype]. <i>Chone picta</i> (Verrill, 1885) [YPM 30000, topotypes].</p> <p> <b>Description.</b> <i>Colour</i>, <i>body shape</i>, <i>and size</i>. Body cream coloured. Holotype with histolysis, fragmented in four pieces. Trunk cylindrical (Fig. 9 C). Body length 21 mm, width 1.5 mm. Tube unknown.</p> <p> <i>Branchial lobes and branchial crown</i>. Insertion of the branchial lobes not exposed beyond collar. Branchial crown length: 12 mm. Radioles: 9 pairs. Radioles with median pinnules two times longer than more proximal pinnules. Radiolar tips short (Fig. 9 D). Palmate membrane extends three quarters the length of branchial crown. Lateral flanges broad (Fig. 9 D). Dorsal lips two times longer than wide, erect, without a discernable longitudinal ridge. Dorsal pinnular appendages: 1–3 short pairs, united by a palmate membrane. Ventral lips rounded, as long as wide, about one quarter the length of the dorsal lips. Ventral radiolar appendages: 1–3 pairs, the inner one about three quarters of the branchial crown length, the remainder about one quarter the length of the branchial crown.</p> <p> <i>Peristomium</i>. Anterior peristomial ring lobe not exposed beyond collar, distally entire. Posterior peristomial ring collar: antero-dorsal margin deeply incised (perhaps due to histolysis) (Fig. 9 A); lateral and ventral margins entire (Figs 9 B–C), ventral slightly higher than dorsal (Figs 9 B–C); entire length of mid-dorsal collar margins forms a broad gap. Ventral shield of collar swollen, horseshoe-shaped, two times wider than long (Fig. 9 B). Ratio of posterior peristomial ring collar length <i>versus</i> chaetiger 2 length, in lateral view: 1.5:1.</p> <p> <i>Thorax</i>. Elongate, narrowly hooded chaetae (Fig. 9 F); narrowly hooded bayonet chaetae, two posterior rows with symmetrical, paleate chaetae with medium-sized mucro (Figs 9 G–I). Thoracic uncini (Fig. 9 J) with five rows of teeth over the main fang, second tooth enlarged and located in midline, dentition covering one quarter of the main fang length. Narrow glandular ridge on chaetiger 2.</p> <p> <i>Abdomen</i>. Abdominal segments: 41. Elongate, narrowly hooded chaetae, upper row chaetae half as long as lower row ones (Fig. 9 M); anterior abdominal uncini with the main fang surmounted by four rows of equal in size teeth, occupying one half of the main fang length, main fang not extending beyond breast, breast rectangular (Fig. 9 K). Posterior segments: 1–2 very elongate, narrowly hooded chaetae, 25% longer than in anterior segments; uncini similar to those in anterior abdominal segments, but smaller (Fig. 9 L). Pygidium with rounded posterior margin (Fig. 9 E).</p> <p> <i>Gametes</i>. Holotype female with oocytes in all thoracic and anterior abdominal segments, diameter undeterminable.</p> <p> <i>Methyl green staining</i>. Anterior end of ventral collar shield not coloured. Body coloured uniformly dorsal and ventrally.</p> <p> <b>Remarks.</b> <i>Parachonia</i> Kinberg, 1867, was regarded as junior synonym of <i>Chone</i> by Johansson (1927). The original description of <i>Chone letterstedti</i> (Kinberg) is brief. Thus, it had to be redescribed to be properly compared with the remaining species in the genus. This redescription points out that in <i>C. letterstedti</i>: a) radiolar tips are short; b) radiolar flanges broad; c) anterior dorsal margins of collar deeply incised; d) entire length of mid-dorsal collar margins forms a broad gap; and e) abdominal uncini with similar shape throughout.</p> <p> <i>Chone letterstedti</i>, <i>C. infundibuliformis</i>, <i>C. aurantiaca</i>, <i>C. duneri</i>, <i>C. gracilis</i>, <i>C. magna</i>, <i>C. mollis</i> and <i>C. picta</i> have the anterior and posterior abdominal uncini with similar shape: a well developed main fang surmounting by few smaller teeth irregularly arranged, overlapping, not as a uniform set of rows, that occupy less than a half of the main fang lengths; main fang not extending beyond breast, and with rectangular well developed breast, handles absent. However, <i>C. letterstedti</i> is unique among these species because it has the anterodorsal margin of collar deeply incised.</p>Published as part of <i>Tovar-Hernández, María Ana, 2007, On some species of Chone Krøyer, 1856 (Polychaeta: Sabellidae) from world-wide localities, pp. 31-68 in Zootaxa 1518</i> on pages 47-48, DOI: <a href="http://zenodo.org/record/177378">10.5281/zenodo.177378</a>
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Chone fauveli McIntosh 1916
No full text<i>Chone fauveli</i> McIntosh, 1916 <p>Figure 6</p> <p> <i>Chone fauveli</i> McIntosh, 1916: 36 –42, Pl. 2, Fig. 8.— McIntosh, 1923: Pl. 121, Fig. 2, Pl. 130, Fig. 2.-- Knight-Jones, 1990: 275, Fig. 6.20.— Kirkegaard, 1996: 374, Fig. 214.-- Cochrane, 2000: 145.</p> <p> <b>Material examined.</b> <i>Non-type material</i>. <b>Norway</b> [ZMUB] 25115 Saltenfjord, 1900, 15– 20 m, Leg. Nordgaard (1); 25488 Skjaergården Sta. 91, Leg. Appeløf (1). [ZMO] Bergen, Sta. 60, 29/4 (1); Oslofjorden, Vausu, Sars 90 (6). <b>Scotland</b> [NMW.Z] Sullom Voe, Shetland: 1986.112.0 0 97, Sta. 6F, coarse silt, 5 m, Coll. OPRU 1985 (1); 1986.112.0 0 98, Sta. OV 4.1, very fine sand, 16 m, Coll. OPRU 1985 (1); 1987.137.0 0 25, Sta. 6, 8 m, Coll. OPRU (DL), June 1987 (1); 1987.137.0 0 26, Sta. OV 3, 17 m, Coll. OPRU (DL), June 1987 (1); 1997.078.0 0 63, Sta. B49, J, very fine sand, 53 m, Coll. IOE (1). Calback Ness and Little Roe, Sullom Voe, Shetland Isles: 1997.078.0 0 64, between, Sta. B49, K, medium sand, 31 m, Coll. IOE (1); 1998.062.0 0 62, Sta. B48, K, medium sand, 32 m, Coll. IOE, April 1988 (4). <b>Northern North Sea</b> [NMW.Z] Norway Ekofisk Oilfield: 2000.002.0 0 0 6, Sta. E87, 31, 56 36’ N, 03° 12’ E, very fine sand, 68 m, Coll. OPRU, July 1987 (1); 2000.011.0 0 13, Sta. E80, 18, 56° 36’ N, 03° 12’ E, very fine sand, 71 m, Coll. OPRU, August 1980 (1); 2000.011.0 0 14, Sta. E80, 17, 56° 36’ N, 03° 12’ E, very fine sand, 71 m, Coll. OPRU, August 1980 (1). [ZMH] P–15204, S. Loreley Bank, 4.5 JM, Grobsand & etw Schill, 37 m, April 25, 1966, Coll. STRIPP (1).</p> <p> <i>Additional material</i>. <i>Chone aurantiaca</i> (Johnson, 1901) [MCZ 1933, holotype]. <i>Chone magna</i> (Moore, 1923) [USNM 17281, holotype]. <i>Chone picta</i> (Verrill, 1885) [YPM 30000, topotypes]. <i>Chone veleronis Branchial lobes and branchial crown</i>. Insertion of the branchial crown exposed dorsally beyond collar (Fig. 6 A). Radioles: 12–22 pairs. Radioles with median pinnules slightly longer than proximal pinnules. Radiolar tips long. The palmate membrane (<i>pm</i>) extends about three quarters the length of the branchial crown (Figs 6 E, J). Lateral flanges (<i>fl</i>) broad (Fig. 6 J). Dorsal lips broadly rounded in frontal view, as long as wide, without mid-rib, resembling the ventral lips, longer than wide in dorso-lateral view. Dorsal pinnular appendages (<i>dpa</i>): 1–4 short pairs united by a palmate membrane (Fig. 6 K). Ventral lips rounded, as long as wide, about one quarter the length of the dorsal lips. Ventral radiolar appendages: 1–2 pairs, short, as long as basal pinnules of the ventral most radiole.</p> <p> <i>Peristomium</i>. Anterior peristomial ring lobe (<i>aprl</i>) not exposed beyond collar, distally entire, triangular (Fig. 6 B). Posterior peristomial ring collar: antero-dorsal (Fig. 6 A), ventral and lateral margins entire (Figs 6 B, E), ventral margin higher than dorsal (Fig. 6 B); longitudinal grooves on dorsal, ventral and lateral sides of collar; entire length of mid-dorsal collar margins forms a broad gap. Dorsal pockets well developed. Ventral shield of collar rounded (Fig. 6 E) (not easily discernible). Ratio of posterior peristomial ring collar length <i>versus</i> chaetiger 2 length, in lateral view: 2:1.</p> <p> <i>Thorax</i>. Chaetigers 2 to 8: notopodia– two irregular rows of elongate, narrowly hooded chaetae (Fig. 6 I); one anterior row with narrow bayonet chaetae (Fig. 6 G); two posterior rows with symmetrical; paleate chaetae with a short mucro (Fig. 6 H); neuropodia– two irregular rows of acicular uncini per torus (Fig. 6 F), second tooth enlarged, located in the midline, dentition covering one quarter of the main fang length. Glandular ridge on chaetiger 2 narrow.</p> <p> <i>Abdomen</i>. Abdominal segments: 68–74. Anterior (Fig. 6 C) and posterior uncini (Fig. 6 D) similar, with the main fang surmounted by four rows of teeth equal in size, occupying less than half the length of main fang, main fang not extending beyond breast, breast rectangular. Pygidium with rounded posterior margin.</p> <p> <i>Methyl green staining</i>. Body stains uniformly, except for the anterior margin of collar (Figs 6 A–B, E).</p> <p> <b>Remarks.</b> In <i>C. fauveli</i>, <i>C. aurantiaca</i>, <i>C. magna</i>, <i>C. picta</i> and <i>C. veleronis</i>, the ventral margin of collar is higher than dorsal margin, and the ratio of posterior peristomial ring collar length <i>versus</i> chaetiger 2 length, in lateral view is 2:1. <i>Chone fauveli</i> and <i>C. veleronis</i> have broad flanges and radiolar tips long, but the glandular ridge on chaetiger 2 is rounded in <i>C. fauveli</i> and sunglasses-shaped extending to the first half of the third segment in <i>C. veleronis</i>. The mucro of the paleate chaetae in <i>C. fauveli</i> is short while it’s missing in <i>C. magna</i> and <i>C. picta</i>, and minute, hair-like in <i>C. aurantiaca</i>. Among species of <i>Chone</i> included in this revision, <i>C. fauveli</i> is unique by having a rounded ventral shield of collar (Table 2).</p> <p> <b> <i>Chone infundibuliformis</i> Kr</b> Ø <b>yer, 1856 new synonymy</b> Figure 7</p> <p> <i>Chone infundibuliformis</i> Krøyer, 1856, 33.— Malmgren, 1866: 404 —405, Pl. 28, Fig. 87.— Malmgren, 1867: 116.— Cunningham and Ramage, 1887: 670, Pl. 44, Fig. 32.— McIntosh, 1916: 35, Pl. 2, Fig. 9.— Fauvel, 1927: 334, Fig. 116a–o.— Wesenberg-Lund, 1950, 58.— Banse, 1972: 461 –465, Fig. 1 a–l.— Hartmann-Schröder, 1996: 550, Fig. 168a–h.— Tovar-Hernández and Sosa-Rodríguez, 2006: 37 –43, Figs 1–3.</p> <p> <i>Chone suspecta</i> Krøyer, 1856: 33 –34.— Malmgren, 1866: 404.-- Hofsommer, 1913: 339 –342, Figs 13–15.-- Cochrane, 2000: 135 –137.</p> <p> <b>Material examined.</b> <i>Type material</i>. <i>Chone infundibuliformis</i> Kr ø yer, 1856 [ZMUC POL –1749, lectotype], [USNM 376, paralectotype], [BMNH 82.5.12.33, paralectotype]. <i>Chone suspecta</i> Kr ø yer, 1856 [ZMUC POL –1748, holotype, Kristianssund, Norway].</p> <p> <i>Observations on C. suspecta holotype</i>. Specimen with histolysis, no branchial crown is preserved. Body length 11 mm, width 1.5 mm. Thoracic uncini with four rows of teeth above the main fang (Fig. 7 A); paleate chaetae with medium-sized mucro (Fig. 7 B); narrowly hooded bayonet chaeta (Fig. 7 D); anterior abdominal uncini with squared breast (Figs 7 E–G). Abdominal segments: 42. Spermatozoa with barrel-shaped nucleus; triangular, small acrosome and two small rounded mitochondria (Fig. 7 C).</p> <p> <b>Remarks.</b> Kr ø yer (1956) described <i>Chone suspecta</i> on the basis of a single specimen with damaged radioles. Malmgren (1866: 404) referred <i>C. suspecta</i> to <i>C. infundibuliformis</i>. Cochrane (2000) stated that the etymology suggested his uncertainty as to whether the specimen was representative of a discrete taxon or a juvenile form of <i>C. infundibuliformis</i>. This study confirms that <i>C. infundibuliformis</i> Kr ø yer, 1856 is a synonym of <i>C. suspecta</i> Kr ø yer, 1856. The name <i>infundibuliformis</i> has priority over <i>suspecta</i> and has been in frequent use since its inception and is the name used by most museum curators (Art. 23.1, International Code of Zoological Nomenclature, 2000).</p>Published as part of <i>Tovar-Hernández, María Ana, 2007, On some species of Chone Krøyer, 1856 (Polychaeta: Sabellidae) from world-wide localities, pp. 31-68 in Zootaxa 1518</i> on pages 42-44, DOI: <a href="http://zenodo.org/record/177378">10.5281/zenodo.177378</a>
- …
