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| Registros recuperados: 32 | |
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| Land, J. van der. |
| INTRODUCTION Two years ago I found two specimens of a curious animal in a sample of coral sand from Curaçao. It superficially resembled the larva of priapulids, animals that are restricted to cold water. The condition of the specimens did not permit of a description and I did not succeed in determining the group to which the species could possibly belong. Later I happened to see a paper by Remane (1963) in which he gives a simple figure of "a not yet described animal from the sandy bottom of the Red Sea". I immediately recognized it as a relative of the species from Curaçao. Upon request Professor Remane informed me that he had fixed some specimens, but that these were lost. He had not found more material of the species and he had not heard of these... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.71. |
| Ano: 1968 |
URL: http://www.repository.naturalis.nl/record/318436 |
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| Land, J. van der. |
| INTRODUCTION On 24 September 1962 a number of Tardigrada was obtained from a sample of lichens from the French Alps. The lichens had been collected Figs. 1, 2. Pyxidium tardigradum n. sp. on Hypsibius oberhaeuseri (Doy.). on 27 June 1961 from a rock in the department Haute Savoie and had been preserved in a dry condition for nearly fifteen months. After washing, living specimens of three different species of Tardigrada (Hypsibius oberhaeuseri (Doyère), Macrobiotus hufelandii Schultze and Echiniscus spec. were found, together with some eggs of Hypsibius oberhaeuseri and Macrobiotus hufelandii, a small number of Rotatoria and some dead Oribatid Acari. About twenty Protozoa appeared to be attached to one of the specimens of Hypsibius oberhaeuseri (fig. 1). It... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.71. |
| Ano: 1964 |
URL: http://www.repository.naturalis.nl/record/318220 |
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| Land, J. van der. |
| Recently DELAMARE DEBOUTTEVILLE & RENAUD-MORNANT (1965) described two new species of marine tardigrades, Florarctus heimi and F. salvati, for which they erected a new genus. The representatives of this remarkable genus are characterized by the possession of large, aliform expansions of the body, structures which were unknown among the Tardigrada. The two species were taken from coral sand from New Caledonia. Two specimens of an undescribed species, which undoubtedly belongs to the genus Florarctus, have now been found in a sample of coral sand from Curaçao. The sample, preserved in alcohol, was kindly put at the author’s disposal by Dr. P. WAGENAAR HUMMELINCK, who collected it during his investigations of the Piscadera Baai in 1964. |
| Tipo: Article / Letter to the editor |
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| Ano: 1968 |
URL: http://www.repository.naturalis.nl/record/506036 |
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| Land, J. van der. |
| INTRODUCTION In 1889 Van Beneden described a new tetraphyllid cestode, Dinobothrium septaria, for which he erected a new genus. It was peculiar in having a rather small body with a very large scolex, the largest of all tapeworm holdfasts. Since then a small number of other species of Dinobothrium have been described (for two of them new genera were proposed, viz. Gastrolecithus Yamaguti, 1952 and Reesium Euzet, 1955). They have only been found in large sharks, both in preying and in plankton feeding species. Mola (1907) was the first investigator who found such a tapeworm in the Basking Shark, Cetorhinus maximus (Gunnerus). Euzet (1955) has tried to elucidate the remarkable and confused history of these animals. He recognized three genera and only three... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.76. |
| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/318668 |
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| Land, J. van der. |
| INHOUD Inleiding................ 3 Technische zaken............. 4 Programma............... 5 Overzicht van de monsters........... 7 Het meiobenthos............. 19 Het plankton.............. 35 De macrofauna.............. 36 English summary............. 44 Literatuur betreffende Surinaamse Limnologie...... 44 INLEIDING In februari en maart 1967 werd een vijf weken durend bezoek aan Suriname gebracht met de bedoeling daar een studie te maken van de microscopische bodemfauna, het zogenaamde meiobenthos, van het zoete water. Tot dit meiobenthos behoren dieren van allerlei groepen die voordien niet of vrijwel niet verzameld waren in Suriname. Speciale aandacht werd geschonken aan enkele groepen van wormen, die ter plaatse levend bestudeerd moesten worden;... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.93. |
| Ano: 1970 |
URL: http://www.repository.naturalis.nl/record/317275 |
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| Land, J. van der. |
| INTRODUCTION Freshwater microturbellaria of the Netherlands were studied already by De Man (1874). Since then this subject has not received much attention and much faunistic research remains to be done on this large and interesting group. The present paper deals with material from distribution mains for drinking water in the South and the West of the Netherlands and from a canal in the city of Leiden. A new species of Microdalyellia is described. MATERIAL AND METHODS The material was taken from the following samples: Sample no. 150. Leiden, Zoeterwoudse Singel (canal), near Koepoortsbrug. Between vegetation (Glyceria); decaying vegetable debris, mainly Glyceria and Aesculus leaves; 10-15 cm deep; temperature above 50 C (there was no ice in the second half... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.76. |
| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/318744 |
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| Registros recuperados: 32 | |
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