ALBERT

Description: On August 3, 1982 a small squid was collected opposite “Trans World Radio” at Bonaire (Netherlands Antilles). It was kept in a tank for several hours before it died. The species was identified as Pickfordiateuthis pulchella Voss, 1953, hitherto only known from the Florida Keys, U.S.A. According to Voss (1953) it was probably confined to the geographical area represented by the Florida Keys. ABBOTT (1974) mentioned a distribution from southeast Florida to Panama without refering to literature other than Voss (1953). The specimen from Bonaire, a male, differs from the figure of the holotype (a female) mainly in having proportionally shorter tentacles and the posterior end less bluntly tapered. It agrees well with the male paratype, figured by Voss (1953: fig. 3). The measurements of the specimen are: mantle length 16.0 mm, width 6.9 mm and length of head 7.1 mm. The pigmentation of the dorsal side of the head consists of chromatophores, which are larger and darker than those on the ventral side. The pigmentation on the dorsal side of the mantle is less prominent and consists of more diffuse and smaller spots. The ventral side of the mantle is hardly pigmentated with very small dots.

Description: Four species considered to be newly found drifting ashore are described and illustrated: Sargassum natans (L.) Børg., Champia parvula (C. Ag.) Harv., Crouania attenuata (C. Ag.) J. Ag. and Callophyllis laciniata (Huds.) Kütz. In addition some notes are made on new records of Pogotrichum filiforme Reinke, Leathesia difformis (L.) Aresch. and Punctaria latifolia Grev.

Description: Herbs (sometimes saprophytic), shrubs, lianas or trees. Stipules absent but stem sometimes provided with a pair of glands at the nodes. Leaves simple, entire, usually spirally arranged, sometimes alternate, (semi)decussate or verticillate, sometimes scale-like or absent. Inflorescence usually raceme-like and unbranched, (supra- or extra-)axillary and/or terminal, sometimes thyrsoid or fasciculate, rarely flowers solitary. Bracts present; bracteoles basal, rarely ( Salomonia, Epirixanthes) absent. Flowers bisexual, more or less zygomorphous, rarely actinomorphous. Sepals 5, free and quincuncial, or the lower (abaxial) 2 connate, sometimes all connate, subequal or the lateral ones larger and then often wing-like (alae) and petaloid. Petals 3 or 5, free or variously united, occasionally also with the calyx, usually adnate to the base of the staminal tube or the filaments, subequal or more often unequal with the lower petal often keellike and frequently pouched, lobed, or crested. Stamens 2\xe2\x80\x9410, usually 8, filaments usually more or less connate except between the upper stamens, often adnate to the petals; anthers basifixed, tetra- or bi-, rarely trisporangiate, 1- or 2-locular, opening by a single and often oblique pore or by a longitudinal introrse slit. Ovary superior, usually 2-locular but occasionally 1-, 3-, 5-, 7- or 8-locular, sessile or sometimes stipitate; style simple but often variously dilated or lobed at apex, usually articulate with the ovary and nearly always deciduous in fruits. Ovules 1 per cell and subapical, or (in Xanthophyllum) 4\xe2\x80\x94more in a 1-locular, bicarpellate ovary with 2 parietal placentas, anatropous, bitegmic and crassinucellate. Fruit various, a berry, capsule, samara or drupe.\nDistribution. About 15 genera and over 1000 species, widespread in temperate and tropical regions of the world, especially well-developed in South America and South Africa. In Malesia 6 genera, of which Polygala and Securidaca (not in Australia) are cosmopolitan, Xanthophyllum and Salomonia Indo-Australian, Epirixanthes Indo-Malayan. The sixth genus is Eriandra which belongs to the tropical American tribe Moutabeae, of which 3 genera are known in South America; Eriandra occurs in New Guinea and the Solomon Islands and represents a marked example of disjunct, tropical trans-Pacific affinities.

Description: Tragopogon dubius Scop, has been found in 8 localities in the Netherlands, all from 1955 onwards, in dunes, and along roads and railway tracks. This might be caused by a natural extension of its area from North France northwards. T. dubius and T. porrifolius differ from T. pratensis in the dark coloured styles and the swollen peduncles, and slightly so in characters of habit and fruit; from each other they differ in the colour of the ligules and in the number of involucral bracts.

Description: Tragopogon hybridus L. adventief in Nederland. Bij het bewerken van Tragopogonmateriaal voor een publikatie over T. dubius bleek onder het materiaal van T. porrifolius een exemplaar schuil te gaan dat behoort tot de tot dusver niet in Nederland gevonden soort Tragopogon hybridus L. Deze Zuideuropese soort heeft evenals T. porrifolius paarse lintbloemen en een onder het hoofdje verdikte hoofdjessteel, maar wijkt af door de vruchten van de buitenste bloemen: de stralen van het pappus zijn bij deze vruchten verbreed en missen de lange dunne zijharen. Het exemplaar is gevonden door J. Moerkerk in september 1954 in de duinen bij Noordwijk.

Description: Afwijkingen bij Setaria viridis (L.) Beauv. en Setaria verticillata (L.) Beauv. Onder het in 1982 verzamelde herbariummateriaal troffen wij een exemplaar van Setaria viridis aan, afkomstig van Steenwijk (kilometerhok 16.45.24), waarbij de borstels onder de aartjes met naar achter gerichte haakjes waren bezet (van onder naar boven gaande voelt de bloeiwijze dan ruw aan). Dit kenmerk wordt als exclusief voor Setaria verticillata beschouwd en het materiaal was dan ook als zodanig gedetermineerd. Bij S. viridis was een dergelijke afwijking ons niet bekend. Bij S. verticillata komen afwijkende exemplaren, met naar voren gerichte haakjes op de borstels (van onder naar boven gaande voelt de bloeiwijze dan glad aan), vrii regelmatig voor. Bij het determineren van genoemde Setaria\xe2\x80\x99 s kan men dus niet zonder meer vertrouwen op het \xe2\x80\x98makkelijke\xe2\x80\x99 kenmerk van de richting van de haakjes op de borstels.

Description: Contrary to Kern & Reichgelt (1954) it is concluded that both C. reichenbachii and C. ligerica can not be distinguished from C. arenaria in the Netherlands. The paper deals with the results of a reexamination of some collections identified by Kern and Reichgelt. The collections have especially been examined on the distribution of the sexes in the inflorescence (fig. 1: complete inflorescences, male flowers in solid dots, female ones in circles), form of the achenes (fig. 2), diameter of the rhizomes (fig. 3), width of the leaves (fig. 4). Within subg. Vignea C. arenaria s. lat. can be characterized by middle partial inflorescences which have male flowers both in basal and in apical position, and by long rhizomes. It is concluded that no taxonomically important differences could be found between the three \xe2\x80\x98species\xe2\x80\x99.

Description: Five halacarid species, found in the mesopsammal of Caribbean Islands, are described, viz. Halacarellus tropicalis n. sp., Copidognathus grandiosus n. sp., Agaue arubaensis n. sp., Scaptognathus ornatus n. sp., and Limnohalacarus cultellatus Viets, 1940. H. tropicalis is the first member of the genus Halacarellus reported from tropical beaches.

Description: Seven springs in the Middle Atlas and five in the Rif have been studied. These show a great diversity of crenal habitats: water temperature ranges from 8.7\xc2\xb0 to 21\xc2\xb0C, and the flow from 1 l/s to 1,800 l/s. Based on hydrologic and thermic characteristics, a spring typology is provided.\nThe invertebrate community consists of 60 species, among which 4, found in the Rif, are new to science: Protonemura sp. (Plecoptera), Obuchovia sp. (Diptera, Simuliidae), Rhyacophila fonticola n. sp., and Philopotamus ketama n. sp. (Trichoptera). The new Trichoptera are both described. Two rare endemic species (the planarian Acromyadenium maroccanum and the coleopteran Elmis atlantis) have been found in a cold-water spring in the Middle Atlas; two black-fly species ( Cnetha carthusiensis and Simulium lamachei), new to North Africa, have been collected in a cold-water spring in the Rif.\nThe cold-water spring community shows a high rate of endemism. Seven endemic cold-stenothermous species constitute a most characteristic crenon fauna in northern Morocco. The fauna of warmer springs (18\xc2\xb0 \xe2\x89\xa4 temp. \xe2\x89\xa4 21\xc2\xb0C) contains potamophilous and thermophilous species, a few of them belonging to the Ethiopian fauna.\nA comparative study of spring and rhithric communities of Morocco shows that, in the Middle Atlas and the Rif, cold-water springs became refugia for cold-stenothermous, west-palaearctic species; in the past, these species occupied a larger territory which has been reduced after recent climatic and hydrologic changes.