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| Registros recuperados: 473 | |
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| Binnekamp, J.G.. |
| A continuous sequence of Devonian sediments is exposed in the northern part of the province of Palencia (NW-Spain), on the southern slope of the Cantabrian Mountains. This study concerns the stratigraphy and paleontology of the Lower Devonian formations. At the base of the sequence a clastic formation is found, called the Carazo Formation. This unit can be sub-divided into three members, from top to bottom: (c) alternating shales and sandstones, (b) quartzitic sandstones, partly strongly ferruginous, (a) shales and micaceous sandstones. Members a and b did not yield fossils. The upper part of the formation is richly fossiliferous. The main element of the fauna consists of brachiopods, which occur together with tentaculites, trilobites, ostracods, and... |
| Tipo: Article / Letter to the editor |
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| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/505942 |
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| Demoulin, G.. |
| En 1875, R. McLachlan décrivit Ephemera orientalis d'après un unique exemplaire ♂, capturé au Japon par P. F. von Siebold. Depuis lors, l'espèce a été signalée à nouveau, non seulement du Japon, mais de Sibérie orientale, et ce par divers auteurs. Mais aucune iconographie n'en a été donnée. En 1952, O. A. Tshernova a fait remarquer que toutes les citations de Ephemera lineata Eaton pour des captures en Asie orientale, continentale autant qu'insulaire, étaient erronées et devaient être étiquetées: Ephemera amurensis Navas. L'auteur russe envisage également la possibilité d'une synonymie E. orientalis = E. amurensis, mais, faute de matériel de la première espèce, ne peut se prononcer. Grâce à l'amabilité de M. le Dr. M. A. Lieftinck, que je remercie très... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.75. |
| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/318777 |
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| Groenhart, P.. |
| The hyphal elements in the hymenium of the mature ascocarp do not provide a reliable means of distinguishing an ascohymenial ascocarp from an ascostroma. The nature of these hyphal elements is determined by neither their shape nor their tips but solely by their origin. Furthermore, since it has not yet been proved that there is any relation between the structure of the ascus and the type of development of the ascocarp, the kind of ascus is of relatively little value as a means of determining the developmental type of the ascocarp. Moreover, it is often practically impossible to decide whether an ascus is bitunicate or not. The author does not know of any other feature that is a reliable indicator of the true nature of the ascocarp. Therefore, he sees no... |
| Tipo: Article / Letter to the editor |
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| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/532216 |
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| Leys, H.N.; Bannink, J.F.. |
| Amsinckia menziesii (Lehm.) Nels. & Macbr., a species occurring in western North America on moist slopes and fields, open valley floors and hillsides, has been found very rarely in 5 places of our country (Gorinchem 1913, Renesse 1952 and 1958, Wageningen 1963, Blauwkapel 1963, Rockanje 1963). In an oats crop naar Venray and Broekhuizen it was found again and collected in 1964. The ecology of this species seems to be the same as that of Lycopsis arvensis L. subsp. arvensis. |
| Tipo: Article / Letter to the editor |
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| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/527280 |
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| Frets, D.C.. |
| The ”Cordillera Cantabrica”, which borders the Old-Castilian meseta in the north, is mainly a Hercynian mountain chain. The area with which this study is concerned is part of the southern border of this mountain belt and lies in the northeast in part of the province of Palencia. The topographic elevation varies from approximately 1000 m at the southeastern border to 2000 m in the northeastern and western parts. The central part of the mountain range has a true mountain climate, but towards the south this rapidly becomes semi-arid continental. The Pisuerga River, flowing south, is the main river; its drainage-area borders towards the northeast on that of the Ebro River and towards the west — near Santibañez — on that of the Carrion River. For more... |
| Tipo: Article / Letter to the editor |
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| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/505695 |
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| Hammen, L. van der. |
| The present paper is the first part of a series of two studies dealing with the morphology of the suborder Holothyrina. Some years ago (Van der Hammen, 1961), I published already an extensive description of a species from New Guinea (Holothyrus grandjeani Van der Hammen), in which paper I pointed to a number of important characters generally neglected in the study of Anactinotrichida. Because my material of H. grandjeani contained only one adult specimen, a number of characters (e.g. details to be studied in transverse as well as in longitudinal sections) could, however, not be taken into consideration. As a result of my 1961 study, a reinvestigation of nearly all species of Holothyrus, and especially of the type-species (H. coccinella), became highly... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.74. |
| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/318632 |
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| Hammen, T. van der; Gonzalez, E.. |
| The Laguna de La Herrera (alt. ca 2550 m) is a lake situated on the western border of the Sabana de Bogotá, near Mosquera (dept. of Cundinamarca, Colombia) (fig. 2). This part of the Sabana has a relatively dry climate (appr. 600—700 mm rainfall), as it lies in the rain-shadow of the hills that border the Sabana on its western edge, and it bears therefore a xerophytic vegetation. The western slopes of the bordering mountains, that fall steeply to warmer valleys, have a much higher rainfall and are almost continuously clouded. They bear therefore a cloud-forest, of the Quercetum type, that reaches partly the very top of these mountains. Fig. 1 shows this in an idealized section. For further details on the mentioned vegetation-types, we may refer to van der... |
| Tipo: Article / Letter to the editor |
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| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/505957 |
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| Deeleman-Reinhold, C.L.. |
| INTRODUCTION En 1962, 1963 et 1964, mon mari, Monsieur P. Robert Deeieman et moi, nous avons entrepris des voyages en Yougoslavie, dont le but principal fut la capture d'animaux cavernicoles. Dans les eaux souterraines et superficielles nous avons récolté cinq espèces du genre Asellus Geoffroy, dont une sous-espèce nouvelle de A. coxalis, qui sera décrite aux pages suivantes. Dans la collection du Rijksmuseum van Natuurlijke Historie à Leiden se trouvent un nombre d'Asellides, recueillis par un groupe d'étudiants au cours d'une expédition zoologique et botanique en Turquie en 1959 (Anonymus, 1963). En examinant ce matériel j'ai trouvé une deuxième nouvelle sous-espèce de A. coxalis, dont la description va suivre ci-dessous. D'abord une définition... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.74. |
| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/319152 |
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| Kimstra-Sinnema, J.G.. |
| An enumeration of the species of Plantago, found in the Netherlands. P. major L., P. coronopus L., P. maritima L., P. media L., and P. lanceolata L. are native; P. serraria L., P. myosuros Lamk., P. lagopus L., P. loeflingii L., P. aristata Michx., P. purshii R. & Sch., P. indica L., P. afra L., and P. sempervirens Crantz are adventive species. |
| Tipo: Article / Letter to the editor |
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| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/527588 |
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| Jacobs, M.. |
| These small structures in nerve axils at the underside of leaves have given food to various theories and have been nonetheless in phytographic and taxonomic neglect almost from the beginning. That was in 1887, when the Swede A.N. Lundstroem published an extensive paper, in which he explained domatia as structures intended to accommodate mites – hence the word acarodomatia – which latter would in turn benefit the plant by cleansing the leaves from fungus spores. Lundstroem arrived at this hypothesis on the strength of ideas current in that time, about the existence of symbiotic relations between ants and plants; it was in the heydays of teleology. A closer investigation left little of the illusions about mutual benefit between ants and plants, but such... |
| Tipo: Article / Letter to the editor |
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| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/533503 |
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| Naaktgeboren, C.; Kamp-Hilt, G.M.W. van de. |
| Die Geburt der Laboratoriumratte wird kurz beschrieben. Das Fressen der Nachgeburt ist nicht notwendig für eine gute Milchsekretion. Die Feten liegen in gekrümmter Haltung in der Gebärmutter, aber werden während der Austreibung gestreckt. Die Austreibung erfolgt nicht immer abwechselnd aus den beiden Uterushörnern. Die Trennung von Plazenta und Uteruswand wird von der Wehentätigkeit herbeigeführt. Durch eine Verschiebung im Bindegewebenetzwerk unter der Plazenta ändert sich die Struktur, sodass diese flache Schicht einen relativ hohen Wulst bildet. Die zirkulär verlaufenden collagenen Fasern bekommen deshalb nach Lösung der Plazenta einen radiären Verlauf. Die Rückbildung dieses Bindegewebewulstes wird beschrieben. Makrophagen spielen dabei eine wichtige... |
| Tipo: Article / Letter to the editor |
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| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/504663 |
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| Sitter, L.U. de; Boschma, D.. |
| The Carboniferous Pisuerga basin developed north of the León line and as such is the most eastern one of the Asturide basins. The Carboniferous sequence is subdivided into Ruesga Group (roughly Lower Carboniferous + Namurian), Yuso Group (roughly Westphalian) and Cea Group (roughly Stephanian). Since the beginning of the Yuso Group the Pisuerga basin became subdivided into a western and eastern basin and since the beginning of the Cea Group the western basin became subdivided into two separate basins. The main folding started during the Stephanian. A remarkable interaction of epeirogenic and orogenic movements leads to the analysis of a close relation between sedimentological and structural features. Several pronounced structural lineaments can be traced... |
| Tipo: Article / Letter to the editor |
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| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/505953 |
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| Verspyck, G.W.. |
| The stratigraphic sequence of the mapped area consists of Paleozoic rocks ranging from Cambro-Ordovician to Carboniferous. Part of this sequence occurs in a regional metamorphic state as schists and migmatites. A large body of a leucocratic gneiss with granites occurs in this metamorphic series, and probably represents an orthogneiss. The petrography of the non-pelitic, mainly calcareous rocks in the schists and migmatites is described. The relations between metamorphism and folding from the Serrat area are treated. A short description of the various structures is given in the last chapter. Pegmatites occurring abundantly in the metamorphics, are dealt with. |
| Tipo: Article / Letter to the editor |
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| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/505668 |
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| Talbot, P.H.B.. |
| The generic name Pellicularia Cooke is rejected as a nomen confusum. Genera and species commonly associated with Pellicularia’ are reviewed. Koleroga Donk is regarded as a synonym of Ceratobasidium Rogers. Two new combinations are made: Oliveonia atrata (Bres.) comb. nov. and Thanatephorus sterigmaticus (Bourd.) comb. nov. The genera dealt with are divided among the Tulasnellaceae and the Corticiaceae, the family Ceratobasidiaceae being regarded as superfluous. The subclasses Heterobasidiomycetes and Homobasidiomycetes are not recognised, as it is impossible to suggest characters by which they may consistently be delimited. The characters normally used for delimiting these subclasses are, however, still regarded as of great importance for separating lower... |
| Tipo: Article / Letter to the editor |
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| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/531922 |
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| Boer, M.H. den. |
| INTRODUCTION The genus Metrocoris Mayr comprises a small, distinct group of waterstriders, mainly inhabiting the Old World tropics. They are to be found on the surface of mountain streams and pools in the jungle. In general they are apterous, but in most species a small percentage of the individuals may have fully developed wings. The species have been little collected and are generally rare in collections. The specimens in early collections are often either single females with eggs, or one male and one female — generally with copulatory organs still partly extended — which fact may suggest that it is very difficult to catch specimens, except when they are less quick or attentive. An extensive description of the genus was given by Matsuda (1960: 302-304).... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.75. |
| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/317718 |
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| Registros recuperados: 473 | |
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