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| Registros recuperados: 60 | |
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| Vervoort, W.. |
| In the course of 1941 I studied a great number of Hydroida from various northern localities present in the collections of the Zoological Museum at Amsterdam. Most of these collections were made by trawlers from IJmuiden and for the greater part presented to the Museum by Mr. F. P. Vermeulen. They are from localities which are accurately known. Moreover, several samples of Hydroida are present in those collections, which were taken in the neighbourhood of Iceland, either by trawlers from IJmuiden or by Dr. J. Metzelaar and Dr. H. Engel. They were all sent to Dr. P. L. Kramp in 1938, who examined them for his list of Hydroida in "The Zoology of Iceland", vol. 2, pt. 5a. Most of these samples returned identified, but some bottles were returned unnamed from... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.72. |
| Ano: 1942 |
URL: http://www.repository.naturalis.nl/record/318941 |
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| Vervoort, W.. |
| At the instigation of Dr. Joel W. Hedgpeth, Resident Director, Marine Science Center, Oregon State University, Newport, Oregon, U.S.A., I studied samples of hydroids, collected by Dr. John C. McCain and Dr. William E. Stout from submarine cliffs in the region around Palmer Station, Antarctica. The hydroids had been obtained during an examination of the zonation of rocky substrates in that area in the austral summer of 1968-1969. During this survey 0.25 m2 samples were scraped from the rocks at 5 feet intervals down to a depth of 50 feet and at 10 feet intervals from 50 to 100 feet. Dr. McCain and Dr. Stout were able to complete one such transect and a portion of another (Hedgpeth, in litt., see also McCain & Stout, 1969). The bulk of the material on... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.72. |
| Ano: 1972 |
URL: http://www.repository.naturalis.nl/record/318008 |
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| Peña Cantero, A.L.; Vervoort, W.; Watson, E.J.. |
| Three new species of Anthoathecatae (Cnidaria, Hydrozoa) of the rare genus Clathrozoella Stechow, 1921, Clathrozoella abyssalis spec. nov., C. bathyalis spec. nov. and C. medeae spec. nov., are described from New Zealand and Antarctic waters. Along with the previously known C. drygalskii (Vanhöffen, 1910) the genus Clathrozoella now numbers four species. Details of the skeleton, hydranths, nematocysts and gonophores are described and discussed, as is also the position of the newly established family Clathrozoellidae. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Hydrozoa; Anthoathecatae; Clathrozoellidae; Clathrozoella; Antarctic; Benthos; New species; 42.79. |
| Ano: 2003 |
URL: http://www.repository.naturalis.nl/record/220315 |
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| Vervoort, W.. |
| INTRODUCTION The present report deals with a collection of Hydroids from the Zoological Museum, Munich, German Federal Republic (Zoologische Sammlung des Bayerischen Staates, München), collected during various expeditions in the Caribbean region. I have thought it advisable to include in this report an annotated checklist of all Hydroids that in the course of time have been recorded from the Caribbean region. The geographical boundaries of that region are discussed below. I want to express my sincere gratitude to Dr. W. Engelhardt and Dr. H. Fechter of the Zoological Museum, Munich, who have placed the valuable material at my disposal. All the material is now preserved in the Zoological Museum, Munich; some duplicates are present in the collections of the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.72. |
| Ano: 1968 |
URL: http://www.repository.naturalis.nl/record/317709 |
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| Ansín Agís, J.; Vervoort, W.; Ramil, F.. |
| Forty-six species of the superfamily Plumularioidea (Hydrozoa, Cnidaria) and some material identified to the generic level, collected by the CANCAP and Mauritania-II expeditions of the Rijkmuseum van Natuurlijke Historie (now Nationaal Natuurhistorisch Museum) in the period 1976-1988, are described, as well as two other species that were used in the present study. In addition to the descriptions, synonymy, variability and geographical distribution are discussed; autoecological data and measurements are also presented. The new species described here are: Aglaophenia svobodai spec. nov., Streptocaulus caboverdensis spec. nov., S. chonae spec. nov., Antennella confusa spec. nov. and Nemertesia anonyma spec. nov. All species are figured. The general... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cnidaria; Hydrozoa; Leptolida; Aglaopheniidae; Halopterididae; Kirchenpaueriidae; Plumulariidae; North-eastern Atlantic; Geographical distribution; 42.79. |
| Ano: 2001 |
URL: http://www.repository.naturalis.nl/record/219444 |
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| Vervoort, W.. |
| CONTENTS Introduction................... 6 List of the Stations................. 6 Taxonomic Report ................ 13 Family Corymorphidae................... 13 Subfamily Branchiocerianthinae............. 13 Branchiocerianthus norvegicus Brattström, 1956........ 13 Family Tubulariidae................ 15 Tubularia spec...................... 15 Family Corynidae................. 15 Coryne pusilla Gaertner, 1774............. 15 Family Bougainvilliidae............... 16 Dicoryne spec................. 16 Hydractinia echinata (Fleming, 1828)........... 17 Leuckartiara octona (Fleming, 1823)........... 17 Leuckartiara abyssi (G. O. Sars, 1874).......... 19 Family Eudendriidae................ 20 Eudendrium laxum Allman, 1877............ 20 Eudendrium rameum... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.22. |
| Ano: 1972 |
URL: http://www.repository.naturalis.nl/record/317861 |
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| Vervoort, W.; Ramirez, F.. |
| The material on which the following note is based was collected by the second author from the gill cavities of Austroatherina smitti (Lahille, 1929) from Mar del Plata, Argentine coastal waters, in the course of 1966 and consists of a number of female and male Bomolochid Copepods. In the course of the process of identification the copepods turned out to represent a new species, closely allied to but probably different from Parabomolochus xenomelanirisi (Carvalho, 1955), the only species of Bomolochidae so far known to occur along the Atlantic coast of South America. It was decided to draw up the description jointly; the drawings have been made after the dissected holo- and allotype by the first author, using Dr. Ramírez' sketches. Parabomolochus globiceps... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.74. |
| Ano: 1968 |
URL: http://www.repository.naturalis.nl/record/317955 |
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| Vervoort, W.. |
| In April 1949 Mr. J. A. W. Lucas, a student of Biology and a careful collector of marine animals, supplied the Rijksmuseum van Natuurlijke Historie at Leiden with some specimens of Limnoria lignorum (Rathke), found in logs of wood washed ashore near Katwijk. These Isopods proved to be infested by a small Harpacticoid Copepod and by a species of Ostracod. These animals were occasionally observed on the oral appendages and the legs. The Copepods were attached to various parts of the carapace, usually the telson, and were very small (about 0.5 mm) and the identification met with considerable difficulties. They proved to be identical, at last, with Harrietella simulans (T. Scott, 1894), a species known from the Firth of Forth and the Firth of Clyde in Great... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.74. |
| Ano: 1950 |
URL: http://www.repository.naturalis.nl/record/318810 |
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| Vervoort, W.. |
| The genus Onchocalanus was established by G. O. Sars in 1905 for two remarkable new Copepods, collected in deep water of the Atlantic Ocean, which were named Onchocalanus trigoniceps and Onchocalanus hirtipes. Of both forms the females only were found. Sars' generic diagnosis is very short; he only states that his new genus Onchocalanus is closely related to Xanthocalanus Giesbr., 1892, from which it differs by the shape of the rostrum, which in Onchocalanus is strongly chitinized and has a bifurcated apical portion, by the unusually strong, curved claw on the extremity of the 2nd maxilla, by the long and slender maxillipeds, and by the spinulation of the four pairs of swimming legs. In addition in the two genera there are minor differences in the shape of... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.74. |
| Ano: 1950 |
URL: http://www.repository.naturalis.nl/record/317829 |
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| Vervoort, W.. |
| The rich material of Copepods collected by the Snellius Expedition in the seas of the Eastern part of the Malay Archipelago was placed at my disposal in 1943 by Prof. Dr. H. Boschma. The material proved to be very interesting and contained, besides new species, many rare forms found for the first time in the Indo-pacific area. A report on the families Calanidae, Eucalanidae, Paracalanidae, and Pseudocalanidae will be published in Temminckia, vol. VIII, pp. 1-181. A report on the family Aetideidae was completed in 1946 but, as the printing difficulties created by the war have not yet sufficiently improved to warrant the publication of this report within a short time, it seems desirable to publish a preliminary account of some new or interesting forms.... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.74. |
| Ano: 1949 |
URL: http://www.repository.naturalis.nl/record/317660 |
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| Calder, D.R.; Vervoort, W.. |
| An account is given of some hydroids from the Mid-Atlantic Ridge, collected during dives of submersibles "Nautile" (operated by IFREMER, France) and "Alvin" (operated by Woods Hole Oceanographic Institution, U.S.A). The specimens came from three main sectors of the ridge: 15 species from localities near hydrothermal fields (540-1727 m) SW of the Azores, five species from an area (2565-3902 m) west of the Cape Verde Islands near Researcher Ridge, and one species from a site (4529-4578 m) within the Vema Fracture zone west of Guinea Bissau. In all, 21 species were distinguished, comprising two anthoathecates and 19 leptothecates. The families Lafoeidae and Sertulariidae were best represented, with six and four species respectively. Halecium profundum spec.... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cnidaria; Hydrozoa; Hydroida; Mid-Atlantic Ridge; Deep water fauna; Hydrothermalism.; 42.72. |
| Ano: 1998 |
URL: http://www.repository.naturalis.nl/record/317818 |
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| Peña Cantero, A.L.; Vervoort, W.. |
| Jäderholm's type of Schizotricha antarctica, collected by the Swedish Antarctic Expedition 1901-1903, is redescribed from a syntype in the collections of the Swedish National Museum, Stockholm. The type lot of that species proved to be composite, the material best resembling Jäderholm's (1904, 1905) descriptions and figures has been designated as the syntype. There are two more species in the type lot, that have also been described, but are too poorly represented to be either recognized as one of the described species of Oswaldella or to merit a new specific name; they have been indicated as Oswaldella spec. 1 and spec. 2. Resumen: Se ha revisado y redescrito el material tipo de Schizotricha antarctica Jäderholm, 1904, recogido durante la Swedish Antarctic... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cnidaria; Hydrozoa; Hydroids; Antarctic; Redescription of Oswaldella antarctica; New species; 42.72. |
| Ano: 1995 |
URL: http://www.repository.naturalis.nl/record/318099 |
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| Vervoort, W.. |
| The material on which the present report is principally based, was collected by Dr. J. H. STOCK, Zoological Museum of the University, Amsterdam, in Piscadera Bay, Curaçao, in 1958 and 1959, and kindly placed at my disposal some time ago. In the course of my study of this highly interesting material it became necessary to redescribe some of C. B. WILSON’S fragmentarily known species of Bomolochidae. A re-inspection of some of WILSON’S types has been made possible thanks to the generous co-operation of Dr. THOMAS E. BOWMAN, Associate Curator, Divison of Marine Invertebrates, and Dr. ROGER F. CRESSEY, Associate Curator, Division of Crustacea, both of the Smithsonian Institution (United States National Museum), Washington, U.S.A. The bulk of the Piscadera Bay... |
| Tipo: Article / Letter to the editor |
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| Ano: 1969 |
URL: http://www.repository.naturalis.nl/record/506175 |
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| Vervoort, W.. |
| In the course of 1944, whilst engaged with the revision of the collections of Hydroids in the Rijksmuseum van Natuurlijke Historie at Leiden and the Zoological Museum at Amsterdam, I had the opportunity to study a considerable number of Hydroids from the tropical and subtropical parts of the three large oceans. No report has up to the present time been published on these Hydroids, although many specimens are of considerable interest. The present paper contains the results of the study of these samples, which were kindly put at my disposal by Prof. Dr. H. Boschma and Prof. Dr. L. F. de Beaufort. I also wish the express my sincere thanks to Mrs. W. S. S. van der Feen née van Benthem Jutting and Miss Dr. Jos. Th. Koster for their assistance in providing me... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.72. |
| Ano: 1946 |
URL: http://www.repository.naturalis.nl/record/318911 |
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| Medel, M.D.; Vervoort, W.. |
| Twenty-three species, subspecies or varieties of hydroids of the families Thyroscyphidae and Sertulariidae (Leptolida, Hydrozoa, Cnidaria) are described and figured, originating from north-eastern Atlantic localities visited during the CANCAP and Mauritania-II Expeditions of the Rijksmuseum van Natuurlijke Historie (now Nationaal Natuurhistorisch Museum) in the years 1976-1988 and covering waters around Azores, Canary Islands, Madeira, Cape Verde Islands and the Atlantic off Morocco and Mauritania. Besides notes on the variability of the various species in the large material available, vertical and horizontal distributions are discussed. Observations on the considerable material of Sertularella ellisii (Deshayes & Milne-Edwards, 1836) indicate that... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cnidaria; Hydrozoa; Leptolida; Sertulariidae; North-eastern Atlantic; Geographical distri- bution.; 42.72. |
| Ano: 1998 |
URL: http://www.repository.naturalis.nl/record/317647 |
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| Registros recuperados: 60 | |
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