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  • 1925-1929
  • 1925  (21,406)
Collection
Language
Year
  • 1
    facet.materialart.
    Unknown
    In:  Bijdragen tot de dierkunde vol. 24 no. 1, pp. 9-14
    Publication Date: 2024-01-12
    Description: The authors who have studied the Rhizocephala have a quite different opinion as to the limits of the species, especially those of the genus Sacculina. On the one side KOSSMANN (1874) and GIARD (1887, 1888) are convinced that every specimen of Sacculina found on a certain crab has to be separated specifically from those living on another host. On the other hand SMITH (1906) unites all the described species of Sacculina into one widely distributed species which has to keep the name Sacculina carcini. A better way in separating the forms of Sacculina into different species is without doubt the one avoiding both the extremes of the above-cited authors, as explained by GU\xc3\x89RINGANIVET (1911). Only in the cases where morphological structures of specific value are found the forms are to be regarded as different species. A more detailed account of the questions dealing with the difficulties of the species-problem in Sacculina will be published in the monograph on the Rhizocephala of the Siboga Expedition, now in preparation by Professor VAN KAMPEN and the present author. Here only may be pointed to some particularities found in the material dealt with in this paper.\nThe material collected by Dr. VAN DER HORST at Cura\xc3\xa7ao contains four specimens of Rhizocephalid parasites. Three of these belong to the genus Sacculina, the fourth is a representative of the genus Lernaeodiscus. All of these differ from the hitherto known species of the two genera and are therefore described as new species in this paper. Though the material is comparatively small it is of great interest since the three species of Sacculina have a quite different structure. In this paper the structure of the external cuticle is used as a base in the diagnosis of the species. Many species of Sacculina, especially those from tropical regions, possess appendages on this chitinous cuticle, which have in a certain specimen a well-defined form. The size of the appendages may be different in the various regions of the mantle (e. g. those in the neighbourhood of the stalk may be of smaller size than those next to the mantle-opening), but within certain limits the form of these appendages is constant. Already KOSSMANN (1874) made use of the appendages of the external cuticle in the diagnosis of his species, but most authors have not employed this method. Some years ago VAN KAMPEN (1919), however, pointed out that the principles of KOSSMANN\xe2\x80\x99s method could give good results in the taxonomy of this group.
    Repository Name: National Museum of Natural History, Netherlands
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  • 2
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    Unknown
    In:  Bijdragen tot de dierkunde vol. 24 no. 1, pp. 33-80
    Publication Date: 2024-01-12
    Description: Das Material dieser Untersuchung lieferten die 1920 von Dr. C. J. VAN DER HORST auf Cura\xc3\xa7ao gesammelten Opisthobranchiaten. Hier wird nur die einzige vom ihm gefundene Aeolidiade: Phidiana brevicauda nov. spec. besprochen.\nDr. TH. MORTENSEN stellte mir eine Sammlung Opisthobranchien aus dem zoologischen Museum in Kopenhagen zur Verf\xc3\xbcgung, welche auch dem westindischen Meere entstammten. Darunter befand sich auch nur eine Aeolidiade: Berghia coerulescens Laur.
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  • 3
    facet.materialart.
    Unknown
    In:  Bijdragen tot de dierkunde vol. 24 no. 1, pp. 25-32
    Publication Date: 2024-01-12
    Description: About ten years ago Dr. J. H. VERNHOUT, at that time curator at the National Museum of Natural History at Leiden, gave a commentary on the present state of our knowledge about the \xe2\x80\x9cLand- & Freshwater-Molluscs of the Dutch West-Indian Islands\xe2\x80\x9d (Notes Leyden Museum, Vol. XXXVI, pag. 177\xe2\x80\x94189, 1914).\nAfter summarising carefully the different species of every island in particular, he composed a survey in table-form representing their geographical distribution on other Antilles and on the continent.
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  • 4
    facet.materialart.
    Unknown
    In:  Bijdragen tot de dierkunde vol. 24 no. 1, pp. 1-8
    Publication Date: 2024-01-12
    Description: In seiner letzten sch\xc3\xb6nen Arbeit (1923), welche in so vielen Hinsichten zu gleichen Resultaten kommt wie die unsrige \xc3\xbcber die Siboga-Epicariden, tritt CHOPRA mit uns in Diskussion \xc3\xbcber einige Punkte, welche wir hier kurz besprechen wollen. Erstens schl\xc3\xa4gt er vor, die von uns \xe2\x80\x9eCoxalplatten\xe2\x80\x9d genannten Bildungen \xe2\x80\x9eanterior lateral plates\xe2\x80\x9d zu nennen, obschon er, weil er unsere Arbeit w\xc3\xa4hrend der Bearbeitung seines Materials noch nicht kannte, f\xc3\xbcr diese \xc3\xbcberall die Worte \xe2\x80\x9ePleura\xe2\x80\x9d und \xe2\x80\x9eEpimera\xe2\x80\x9d benutzt hat, und zwar einfach deshalb, weil diese Worte von andern Forschern am meisten angewandt werden. Wie wir indessen versuchten deutlich auseinanderzusetzen, ist dies nicht erlaubt, denn Pleura und Epimera sind nicht ohne weiteres identisch. Und weil man \xc3\xbcberhaupt nicht wissen kann, welchen morphologischen Wert man den von uns genannten \xe2\x80\x9ehinteren Seitenteilen\xe2\x80\x9d zuschreiben darf, sodass diese nur als topographische Begriffe aufgefasst werden m\xc3\xbcssen, so kann man schwerlich von \xe2\x80\x9evorderen\xe2\x80\x9d und \xe2\x80\x9ehinteren Seitenteilen\xe2\x80\x9d sprechen, wie CHOPRA es tut. Mit dem Begriffe \xe2\x80\x9eCoxalplatten\xe2\x80\x9d aber steht es anders; dass man dieses Wort anwenden darf, ist von uns mehrfach begr\xc3\xbcndet worden.\nEin zweiter Punkt in CHOPRA\xe2\x80\x99s Arbeit ist dieser. Wir haben immer von acht Thoracomeren gesprochen, weil es faktisch diese Zahl gibt. Dass das erste Thoracomer mit dem Cephalon verschmolzen ist, \xc3\xa4ndert diese Sache nat\xc3\xbcrlich in keiner Hinsicht. Dennoch zieht CHOPRA es vor, immer von 7 Thoracomeren zu sprechen, d. h. das erste freie Thoracomer (morphologisch das zweite) nennt er erstes Thoracomer, und zwar nur deshalb, weil alle Forscher dies bis jetzt getan haben. Uns scheint, dass man dem richtigen morphologischen Weg folgen muss, nicht dem unrichtigen, am meisten benutzten Weg. CHOPRA\xe2\x80\x99s Furcht, dass dies zu Verwirrung Anleitung geben k\xc3\xb6nnte, teilen wir keineswegs.
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  • 5
    facet.materialart.
    Unknown
    In:  Bijdragen tot de dierkunde vol. 24 no. 1, pp. 81-96
    Publication Date: 2024-01-12
    Description: Die von Dr. C. J. VAN DER HORST in Amsterdam im Jahre 1920 von seiner Reise nach Cura\xc3\xa7ao heimgebrachten Gephyreen lieferten das Material f\xc3\xbcr diese Untersuchungen. Nur einige wenige Arbeiten handeln \xc3\xbcber Westindische Gephyreen, unter denen ich in erster Reihe die Arbeit FISCHER\xe2\x80\x99s \xc3\xbcber das von Prof. K\xc3\x9cKENTHAL und Prof. HARTMEYER gesammelte Material hervorheben will. Diese Sammlung enthielt 10 Sipunculiden und 2 Echiuriden, darunter vier neue Arten. Es fanden sich: Siphonosoma occidentale Spengel, Physcosoma antillarum Grube, Ph. dentigerum Selenka und de Man, Ph. nigrescens Keferstein, Ph. pectinatum Keferstein, Ph. varians Keferstein, Aspidosiphon speciosus Gerould, A. spinoso-scutatus Fischer, A. steenstrupi Diesing, Lithacrosiphon k\xc3\xbckenthali Fischer, Thalassema baroni GREEFF und Bonellia thomensis Fischer. In einer anderen Arbeit \xc3\xbcber die Sammlung des Reichsmuseums zu Stockholm, meldet FISCHER noch folgende Arten aus dem betreffenden Gebiet: von C. BOVALLIUS, Physcosoma scolops Selenka und de Man gesammelt Phascolosoma pellucidum Keferstein, Dendrostoma alutaceum Grube, Aspidosiphon m\xc3\xbclleri Diesing und Lithacrosiphon odhneri Fischer, alle gesammelt von A. v. GO\xc3\x8bS.\nUnter den von Dr. VAN DER HORST gesammelten Gephyre\xc3\xabn waren 20 Arten, 18 Sipunculiden und 2 Echiuriden, darunter 11 neue Arten.
    Repository Name: National Museum of Natural History, Netherlands
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  • 6
    facet.materialart.
    Unknown
    In:  Bijdragen tot de dierkunde vol. 24 no. 1, pp. 97-120
    Publication Date: 2024-01-12
    Description: This collection of Nemerteans is the largest one, known from these regions. It contains only littoral species, most of them being entirely new to science. Only one species is known from other tropical regions, all others seem to be characteristic of the westindian coasts. They are: Ordo HOPLONEMERTINI: Polyschista cura\xc3\xa7aoensis n. g. n. sp. Ordo PALAEONEMERTINI: Carinoma cara\xc3\xafbica n. sp. Ordo HETERONEMERTINI: Baseodiscus curtus (Hubr.). \xe2\x80\x9e unicolor n. sp. Micrura leucopsis Coe. \xe2\x80\x9e vanderhorsti n. sp. \xe2\x80\x9e cura\xc3\xa7aoensis n. sp. ?Cerebratulus ater (Girard). Diplopleura cura\xc3\xa7aoensis n. sp. and two Lineidae, that are incomplete and too much damaged to be identified at all.
    Repository Name: National Museum of Natural History, Netherlands
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  • 7
    facet.materialart.
    Unknown
    In:  Mededeelingen van \'s Rijks Herbarium, Leiden vol. 48 no. 1, pp. 1-10
    Publication Date: 2024-01-12
    Description: Dans les flores de MIQUEL, de BOERLAGE, de KOORDERS, dans \xe2\x80\x9eNaturliche Pflanzenfamilien\xe2\x80\x9d de ENGLER et PRANTL, comme dans \xe2\x80\x9eGenera Plantarum\xe2\x80\x9d de BENTHAM et HOOKER et dans \xe2\x80\x9el\xe2\x80\x99Index Kewensis\xe2\x80\x9d, partout, on trouve le nom de Schoutenia (avec le nom de l\xe2\x80\x99esp\xc3\xa8ce ovata) et comme synonyme Actinophora (fragrans).\nCes derni\xc3\xa8res ann\xc3\xa9es la station d\xe2\x80\x99essai de sylviculture dans l\xe2\x80\x99\xc3\xaele de Java au contraire a pos\xc3\xa9 en avant le nom d\xe2\x80\x99 Actinophora avec le nom de l\xe2\x80\x99esp\xc3\xa8ce, qui s\xe2\x80\x99y rapporte, fragrans. En g\xc3\xa9n\xc3\xa9ral il me semble pr\xc3\xa9f\xc3\xa9rable de ne pas changer sans n\xc3\xa9cessit\xc3\xa9 les noms g\xc3\xa9n\xc3\xa9ralement usit\xc3\xa9s, surtout pas dans les sciences appliqu\xc3\xa9es et dans la vie pratique. Pour le cas qu\xe2\x80\x99il y ait des raisons graves pour remplacer un nom par un autre, la branche de la science pure qui s\xe2\x80\x99est occup\xc3\xa9e de ce probl\xc3\xa8me aura soin le plus souvent de publier le changement de nom; si cela ne se fait pas, il serait \xc3\xa0 souhaiter que quiconque trouve le changement d\xc3\xa9sirable (homme des sciences appliqu\xc3\xa9es ou de la vie pratique) en consulte d\xe2\x80\x99abord la science pure.
    Repository Name: National Museum of Natural History, Netherlands
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  • 8
    facet.materialart.
    Unknown
    In:  Mededeelingen van \'s Rijks Herbarium, Leiden vol. 52 no. 1, pp. 1-9
    Publication Date: 2024-01-12
    Description: Ephedra Gerardiana Wall. A num. list of dried spec. no. 6048. \xe2\x80\x94 ROYLE, III. Bot. Him. p. 40, 348! [1839]. \xe2\x80\x94 O. STAPF, Die Arten der Gattung Ephedra in Denkschr. der Kais. Akad. d. Wiss. Bd. 56 [1889] p. 75! Foot of the Lashiglacier, 5090 M., 27 July 1922 (coll. VISSERHOOFT, no. 35).
    Repository Name: National Museum of Natural History, Netherlands
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  • 9
    facet.materialart.
    Unknown
    In:  Mededeelingen van \'s Rijks Herbarium, Leiden vol. 50 no. 1, pp. 1-5
    Publication Date: 2024-01-12
    Description: The kindness of Dr. GOETHART has enabled me to investigate all the Myxomycetes (Myxogasteres, Mycetozoa) which are kept in the Rijks-Herbarium at Leyden.\nAmong the older collections I found those of PERSOON, V. HALL, HANKARL, BUSE, JUNGHUHN, WAGNER. Only a little part of these collections remains, owing to the way, in which the above-mentioned collectors used to conserve their materials.
    Repository Name: National Museum of Natural History, Netherlands
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  • 10
    facet.materialart.
    Unknown
    In:  Zoologische Mededelingen vol. 8 no. 14, pp. 218-219
    Publication Date: 2024-01-12
    Description: Stat. 95. June 26. Lat. 5\xc2\xb0 43\'. 5 N., Long. 119\xc2\xb0 40\'E. Sulu-sea. 522 M. Stony bottom. One male and another specimen of unknown sex.\nThe nearest allied species is Axius consobrinus (de Man) from Stat. 280. (J. Gr. de Man, in: Notes from the Leyden Museum, Vol. XXIX, 1907, p. 129). Rostrum little longer than broad at its base, reaching almost to the middle of 2nd antennular article; lateral borders diverging somewhat backward, finely serrulate on their distal half, continued on the carapace as sharp ridges that first diverge and then run parallel with the median line. A sharp median carina passes back from the middle of the concave surface of the rostrum and bifurcates on the gastric region, armed just in front of the bifurcation in the male with one, in the other specimen with two minute teeth. Telson one-third longer than broad, posterior margin rounded with a small acute median tooth; lateral borders slightly converging backward, armed in the larger specimen at either side with 4 teeth, in the male with 4 on the left and 5 on the right side; dorsal spines rudimentary. Outer uropod elliptical, one and a half as long as broad, with only an anterior and a posterior, but no apical margin; anterior margin a little arched with 14 rather small teeth, posterior margin strongly curved, with a movable tooth at the apical angle, for the rest unarmed. Inner uropod a little more than twice as long as broad, anterior border with 13 acute teeth, of which the 6 apical ones occur on a lobule, that projects beyond and makes an obtuse angle with the posterior border.\nEyes subsessile, reaching to middle of rostrum, cornea distinctly faceted, occupying nearly the whole stalk, of a beautiful ochraceous colour. Second
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