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| Registros recuperados: 92 | |
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| Horst, R.. |
| Though our knowledge of the Sigalioninae much increased in the last years thanks to the assiduous investigations of Mc Intosh, Pruvot et Racovitza 1), Darboux, Willey a. o., yet there still reigns a good deal of confusion about the exact diagnosis of the genera. Sthenelais simplex Ehl. 2) f. i. has rightly been ranged by Augener among the genus Leanira 3); Leanira Giardi Darb.4) according to the investigations of Marenzeller belongs to Sthenelais 5) and Thalenessa stylolepis Willey 6) will prove, as I presume, to be a species of Sigalion. Partly this may be ascribed to the circumstance, that only a few of the investigators could dispose of a large material and therefore must borrow their knowledge from the often inadequate descriptions of others; but it... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.76. |
| Ano: 1916 |
URL: http://www.repository.naturalis.nl/record/319324 |
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| Horst, R.. |
| 2. Nereidae 1). Nereis (Platynereis) striata (Schm.). (Mastigonereis striata Schm.). Of this species several specimens were collected in Table bay, where they were found for the first time by Schmarda 2) and afterwards met with by Willey 3). Unfortunately the description of the species is rather short and incomplete and the synonimy somewhat dubious; therefore I think it not superfluous to give a detailed account of them, especially while an epitocous male was among them. The specimens are rather small, measuring about 30 mm. in length, whereas the number of segments amounts to 70. The specimens of Schmarda and of Willey were somewhat larger, measuring 50 mm. in length, with about 80 segments. Nereis striata is characterized by a conspicuous coloration,... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.76. |
| Ano: 1918 |
URL: http://www.repository.naturalis.nl/record/318903 |
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| Horst, R.. |
| 1. Amphinomidae and Aphroditidae. Professor Max Weber, during a short stay in South Africa in 1894, made a small collection of Annelids, which he kindly handed me over for examination. As I found among them some species, which for the first time are mentioned from this interesting region, where the fauna'sof the Atlantic and the Indo-Pacific meet each other, it will not be without interest to publish a short note about them. Euphrosyne capensis Kinb. 1). (— polybranchia Schm.) 2). At Seapoint, near low watermark, 8 specimens were collected, the largest of which has only a length of 16 mm., whereas its breadth measures 6 mm.; the number of the segments of this specimen amounts to 45. Eurythoë complanata (Pall). This species, already mentioned by Potts from... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.76. |
| Ano: 1917 |
URL: http://www.repository.naturalis.nl/record/318068 |
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| Righi, G.. |
| The genus Meroscolex Černosvitov, 1934, comprised only two species: M. guianicus Černosvitov and M. longissimus Černosvitov, both known only from French Guiana (Černosvitov, 1934: 56; 1935: 29). A third species, from Suriname, is described in the present paper. Meroscolex hoogmoedi n. sp. Material: Suriname, valley of Coeroeni River, approximately 3°2o'N 57°2o'W, leg. Dienst Bodemkartering Suriname, 24/25 June 1967 (2 clitellate specimens: holotype, coll. no. 5946, paratype, coll. no. 5947). — Suriname, Post Tigrie, New River, 3°2o'N 57°3o'W, leg. M.S. Hoogmoed, 28/29 June 1968 (5 clitellate specimens, 4 without posterior end, and 1 large aclitellate specimen, coll. no. 6055). Material in Rijksmuseum van Natuurlijke Historie, Leiden. The type specimens... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.76. |
| Ano: 1969 |
URL: http://www.repository.naturalis.nl/record/318993 |
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| Dörjes, J.; Young, J.O.. |
| The only hitherto known freshwater acoelan, Oligochoerus limnophilus, has been fully described by Ax & Dörjes (1966). It has been recorded from habitats of different European rivers: Elbe, Ilmenau, Lahn, Main, Mosel and Donau (Kothé, 1961, 1962; Kothé & Sturz, 1963; An der Lan, 1964) where it prefers to settle on artificial stone embankments and is absent from typical lenitic regions and in river parts with a high organic pollution. The species has also been recorded from irrigation canals of rice fields in the Camargue (leg. U. Graefe). Ax & Dörjes (1966) suppose that O. limnophilus emigrated during postglacial periods out of the ponto-caspian area into their new environments because all the other species of the genus have been found in the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.76. |
| Ano: 1975 |
URL: http://www.repository.naturalis.nl/record/317230 |
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| Horst, R.. |
| Occupied with the examination of Hesionidae from the Dutch Eastand West-Indies I found not only, that some genera of this family are described under several different names, but also, as already stated by Webster and Benedict, that the genera seem to be badly confused 1); Leocrates Kbg. f. i. is identical with Lamprophaës Gr. and Tyrrhena Clap., and Podarke pallida was ranged by Claparède among the genus Oxydromus whereas Podarke angustifrons according to Grube belongs to the genus Irma. Partly this might be ascribed to the circumstance, that sometimes not full-grown specimens were described, partly to the fact that the cephalic appendages were overlooked, either in consequence of their minute dimension or because they were fallen off. Because in the last... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.76. |
| Ano: 1921 |
URL: http://www.repository.naturalis.nl/record/318159 |
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| Hernández-Alcántara, P.; Solís-Weiss, V.. |
| from the continental shelf of the Gulf of California lacking thoracic neuropodial hooks confirmed that a new species, Leitoscoloplos multipapillatus, described herein, is present along with Leitoscoloplos panamensis (Monro. 1933), already recorded there. The new species is closely related to L. panamensis, but can be clearly separated from this, and all other species of Leitoscoloplos, by the unique presence of up to 14 stomach papillae per chaetiger. A third taxon was identified, Leitoscoloplos sp., which is morphologically indistinguishable from L. panamensis, except for the presence of 1-2 stomach papillae on 1-2 segments, a feature that although important was not considered significant enough to erect a new species. Morphometric analyses between the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Leitoscoloplos emendation; Leitoscoloplos multipapillatus sp. nov.; Mexican Pacific; Polychaeta; 42.76. |
| Ano: 2014 |
URL: http://www.repository.naturalis.nl/record/474213 |
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| Horst, R.. |
| In eene verzameling Anneliden, door den Heer G. J. van Oordt hoofdzakelijk in Zeeland bijeengebracht en aan 's Rijks Museum van Natuurlijke Historie geschonken, trof ik twee soorten aan, die nieuw zijn voor onze Fauna nl. Mageiona papillicornis Müll, en Spirorbis borealis Daud., terwijl de Anneliden, vroeger bestemd als Scoloplos armiger Müll, mij bleken tot de varieteit mülleri Rathke fe behooren. Scoloplos armiger Müll. var. mülleri Rathke. (Aricia mülleri Rathke). Rathke, Nova Acta Ac. Caes. Leop. Car. Nat. Curios. Dl. XX, 1843, p. 176, pl. VIII, fig. 9—15; De St. Joseph, Ann. Sc. nat. (S. 8), Dl. V, 1898, p. 356, pl. XX, fig. 167. Door de onderzoekingen van St. Joseph en Fauvel 1) is gebleken, dat Scoloplos armiger Müll., gekenmerkt door het bezit van... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.76. |
| Ano: 1919 |
URL: http://www.repository.naturalis.nl/record/319406 |
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| Hartmann-Schröder, G.. |
| Ophistodonta Langerhans ist die einzige Gattung der Unter familie Eusyllinae, bei der der Pharynx-Zahn auf der hinteren Hälfte des Pharynx liegt. Bis 1954 war die von Langerhans (1879) errichtete Gattung nur durch zwei Arten mit je einem Exemplar bekannt. Von diesen beiden Exemplaren existiert sehr wahrscheinlich nur noch der Holotypus von O. pterochaeta, während die Typusart, O. morena, verschollen ist; jedenfalls ist er in den zoologischen Sammlungen der Universität Hamburg, der Humboldt-Universität in Ost-Berlin und des Senkenberg-Museums nicht vorhanden. 1954 fand Pérès im westlichen Mittelmeer bei Marseille einen Eusyllinen mit einem weit hinten liegenden Pharynx-Zahn, den er mit Zögern der nur sehr kurz beschriebenen Opisthodonta morena von... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.76. |
| Ano: 1971 |
URL: http://www.repository.naturalis.nl/record/319246 |
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| Registros recuperados: 92 | |
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