ALBERT

Description: Anon., Lichenen-nummer, Buxbaumiella 16, 1984, 56 pag. Elf artikelen over recente veranderingen in de Nederlandse lichenenflora, waarvan onder andere het artikel over het herstel van de lichenenflora in westelijk Zuid-Holland landelijke belangstelling heeft getrokken.\nAnon. (H. Weijs red.), Wilde planten van Utrecht, Provincie Utrecht, KNNV en Vereniging tot Behoud van natuurmonumenten in Nederland, 1984, 175 pag. (Te bestellen bij de Vereniging tot Behoud van Natuurmonumenten en de Koninklijke Nederlandse Natuurhistorische Vereniging, door storting van \xc6\x92 19,50 voor leden of \xc6\x92 22,50 voor niet-leden op giro 9988 t.n.v. Natuurmonumenten, \xe2\x80\x99s-Graveland of giro 13028 t.n.v. Bureau KNNV, Hoogwoud). Een rijk ge\xc3\xafllustreerd rapport over de resultaten van de in 1974 gestarte provinciale milieu-inventarisatie, waarin 119 soorten apart worden behandeld met een provinciaal verspreidingskaartje van elk op basis van kilometerhokken.

Description: In 1975 two specimens of O. crocata were found in the dunes of Voorne. Since then the number increased to c. 50. The species is described and compared to other umbelliferous species, as it is likely to be mistaken for Petroselinum crispum or Apium graveolens vegetatively. Different observations on the smell of the plant and the colour of its juice are mentioned. The plant is virulently poisonous, which is illustrated with some references from literature. Its Atlantic-Westmediterranean area (fig. 2) has been reconstructed from literature and herbarium collections; somewhat uncertain is a record from Morocco. From an old collection its presence along the Northwest-coast of Italy could be confirmed. The habitats in Voorne, Normandy and Jersey are described and compared, also with records from other localities. At the localities in the northern part of France and in Holland it grows in coastal habitats characterized by a considerable seepage of fresh water rather rich in carbonates.

Description: Some fifty years after the Snellius I expedition (1929-1930) a Dutch-Indonesian joint expedition is carried out (1984-1985) in the Eastern Indonesian archpelago. Based on two months (September -October 1984) of research at nine different reef localities, a first report will be presented on the general morphology, composition and condition of recent and fossil reefs of these areas. The research areas that will be discussed are the following: Ambon: In the bay of Ambon fringing and patch reefs heavily damaged by silting up, caused by soi1. erosion on the island. North East Ambon an elevated reef from the old Pleistocene. Lucipara islands: Exposed very isolated atoll with some sand cays. Tukang Besi islands: Atoll reefs of Kaledupa. Binongko reef terraces; fossil cliffs modelled from massive Pleistocene reef limestone by coastal abrasion during tectonic uplift of the island; extensive reef terrace dating from the last interglacial; living reef not at the moment constructive. Sumba: East Sumba fringing reefs with influence of land and population. Young Pleistocene reef near Melolo, older terraces higher up. Komodo: Various fringing and patch reefs bordering the east side of the National Park of Komodo. Current swept reefs in the strait of Linta. Gililawa Laut and Tinandja lo~r Miocene reefs. Sumbawa: Fringing reefs in Telok Moti Toi and Sanggar bay near Tambora volcano (erupted in 1815). Coral growth in Bima bay. Pleistocene reef north east of Bima. Taka Bone Rate: Large pseudo atoll with small sand cay reefs (e.g. Tinandja) exposed reefs, coral banks and lagoons. Salayer: fringing reefs at west coast around islands Guang and Sahuluan. Pliocene reefs on both islands; Bahuluan with volcanic core. Sulawesi: Coral reef complex on the shallow shelf off South West Sulawesi, with three rows of reefs, most emerging as sand cay reefs. Because of young Holocene reg~ession in front of Ujung Pandang. Influence of sedimentation and population. Apart from these investigations during the Snellius II expedition, a long term project has been carried out since 1979 in the last area mentioned. A continuation of reef research is planned there, in close cooperation with UnHas (University of Ujung Pandang). The presentation of results will be accompanied by maps and photographs.

Description: The taxonomic history of the sponge order Haplosclerida is reviewed, with emphasis on literature concerning the Haplosclerida of the North Eastern Atlantic Ocean. The characters and their value for a phylogenetic classification are discussed. Two families are treated systematically: the Oceanapiidae, which have two representatives in the area, and the Petrosiidae, represented by one species. Emended diagnoses for the order, families, and genera are given.

Description: The midgut epithelium of Oxidus gracilis consists of differentiated cells and regenerative cells. Only the first have many contacts with the surrounding liver cells. The fate of all three cell types has been examined during moulting.\nThe regenerative cells divide at the beginning of moulting. They become cylindrical and form a closed ring basally of the differentiated cells which are pushed in the gut cavity. The contact area of the differentiated cells with the basement membrane becomes smaller and the processes of the basal labyrinth are long and thin. The apical adjoining region is filled with vacuoles containing non-colourable, refractive inclusions. They are ovoid, rounded with membranes and look like typical concrements. In the cell apex no inclusions are visible, the cytoplasm is dense. The nucleus is shifted to the apex and gives the impression of metabolic activity. A microvillous border is still present.\nAt the same time the number of cytosomes in the liver cells is increasing continuously.\nAfter ecdysis the differentiated cells in the gut cavity have disappeared. One part of the former regenerative cells becomes differentiated to active midgut cells, the other part rests probably as juvenile cells. Most cytosomes in the liver cells have disappeared.

Description: Bahadzia, new genus, and two new species of amphipod crustaceans are described from anchialine caves in the Bahamas and Turks and Caicos Islands. One of the species is recorded from three caves on Grand Bahama Island and one cave on Great Abaco Island, whereas the other species is recorded from two caves on the island of Providenciales. The new genus is apparently more closely related to Metaniphargus and Saliweckelia than other hadziid genera in the peri-Caribbean region, but it also shares some important characters with Mayaweckelia.

Description: Specimens of the centipede Lithobius variegatus and the millipede Glomeris marginata collected from uncontaminated sites, and sites contaminated with heavy metals, have been fed on tissues from the terrestrial isopod Oniscus asellus and leaf litter, respectively, containing different concentrations of zinc, cadmium, lead and copper. The extent to which these elements are accumulated by Lithobius variegatus or Glomeris marginata depends on the amounts of metals in the food and the degree of contamination of the site from which the centipedes and millipedes are collected. The tissues within the body where metals are stored are compared in the two animals and suggestions are made of the areas which are in most need of further research.

Description: Ommatoiulus moreleti is a julid millipede native of Spain and Portugal. It has been introduced into Australia, where it has become a considerable pest, and also into Madeira, where it is now reported to be the commonest species of millipede.\nIn April and August 1981 an expediton from the University of Manchester Zoology Department visited Madeira and collections of the species were made in a variety of locations and habitats. The sex, instar and dimensions of each individual were later determined.\nThe stadial distributions at different altitudes are given for April and August.\nA pattern is found with difference in altitude which varies between the times of the year studied. This variation is discussed with reference to the climate of different parts of the island.

Description: A comparative study of four antennal apical cones of diplopods is undertaken in two julids, Typhloblaniulus lorifer Br\xc3\xb6lemann and Cylindroiulus punctatus (Leach), and in a penicillate, Polyxenus lagurus (Linnaeus). The sensory cones, with an apical pore, show a comparatively similar structure. Sensory units converge on each of them. Each unit consists of a group of neurons, the dendrites of which are surrounded by two superposed sheath cells; all the units are also surrounded by other sheath cells overlapping one another at the base of the sensory cones. According to their structure the dendrites seem to belong to two types of neurons: chemoreceptors and mechanoreceptors. The chemoreceptive dendrites are nearly always uniciliate and reach the cone tip. The mechanoreceptive dendrites are always biciliate. At the base of each antennal cone of P. lagurus the two tubular bodies of the single mechanoreceptive neuron surround the chemoreceptive distal segments of one sensory unit. In the sensory cones of the two julids, one mechanoreceptive neuron per sensory unit can be observed, i. e. more than 8 neurons per cone in the specimens studied; their tubular bodies occur in the cone lumen, at 3/4 of its length.\nBesides, in julids, ducts and a group of sensory cells can be observed, their four ciliary extensions being \xe2\x80\x9cfree\xe2\x80\x9d inside the cone; the cone wall is provided with pores on 3/4 of its length.\nThe possible double function, gustatory as well as tactile, is discussed.

Description: The distribution and ecology of centipedes in Norrland (the northern part of Sweden) are investigated. The material comprises about 1200 samples from 926 different localities, most of it collected in a special faunistic and ecological survey. Some problems in the analysis of the material of this survey are pointed out. In Norrland ten species are found outdoors and another seven species occur indoors in the area. The geographical distribution and the constancy for different habitat factors for the seven common outdoor species are shown.