ALBERT

Description: Three females belonging to this species were obtained from the branchial cavity of Microcosmus exasperatus at Spanish Water, Cura\xc3\xa7ao, April 3, 1920. They were not fully grown but measured about 4.50 mm in length, and the large incubatory pouch was filled with minute eggs.\nThis is the species described by THORELL and referred by him to the genus Doropygus, but it differs so much from the other species of that genus that both GIESBRECHT and SARS recognized it as generically distinct. GIESBRECHT referred it to COSTA\xe2\x80\x99S genus Notopterophorus, and SARS created for it the new genus named above, which seems to be correct.

Description: As I have already pointed out in the Narrative of the Voyage (this journal Nr. 23) there is a marked difference between Caracasbay and Spanish Water, the former having clear blue ocean water, the latter being rather muddy. Spanish bay is quite the same as Caracasbay except that it is less sheltered against the tradewinds. Spanish Port is a narrow channel connecting Spanish Water with the bay and shows the transition in the different nature of the water. This difference has a great influence on the fauna as is shown especially by the coral population.\nFor the rest the coralfauna of the West Indies is extensively described by POURTAL\xc3\x88S (III. Cat. Mus. Comp. Zool. No. IV. 1871), VERRILL (Trans. Conn. Ac. Vol. 11. 1901), and VAUGHAN (The stony corals of the Porto Rican waters. U. S. Fish. Comm. Bull. Vol. 2. 1901; Some fossil corals from the elevated reefs of Cura\xc3\xa7ao, Arube and Bonaire. Samml. des geol. Reichsmus. in Leiden, 1901; Fossil corals from Central America, Cuba, and Porto Rico, with an account of the American tertiary, pleistocene, and recent coral reefs. Smiths. Inst. Bull. 103. 1919; etc.).

Description: Bei meiner Untersuchung dieser von Dr. VAN DER HORST auf Cura\xc3\xa7ao gesammelten Mollusken, standen mir auch wieder Tiere aus dem zoologischen Museum in Kopenhagen und aus dem Senckenbergischen Museum zur Verf\xc3\xbcgung, wof\xc3\xbcr ich Dr. TH. MORTENSEN und Dr. F. HAAS meinen wohlgemeinten Dank bringe. Die Aeolidiadae wurden in einer in der 24. Lieferung dieser Zeitschrift erschienenen Arbeit behandelt, die \xc3\xbcbrigen Tiere hoffe ich in einer sp\xc3\xa4teren Arbeit zu besprechen.

Description: The cirripedes of Cura\xc3\xa7ao and the southern borders of the Caribbean Sea have not been investigated hitherto. A collection of the littoral forms made by Doctor C. J. VAN DER HORST in 1920 contains the following species.\nDescriptions, figures and references to other literature of the species may be found in the Monographs of DARWIN \xc2\xb9) and of PILSBRY \xc2\xb2).

Description: For the reason that no records for this group of animals have been made anywhere near that region, the Bryozoa collected by Dr. C. J. VAN DER HORST are of great interest. The collection is quite limited in the number of species, as might have been expected on account of the inconspicuous nature of most of them. Only the specialist in the group, accustomed to collect these minute animals and familiar with their habits of growth, occurrence and appearance, need ever expect to take a very complete series of them. Most of the species in the collection appear to be there incidentally, attached to shells, corals, etc., and were later found on close inspection. A considerable number of the species are represented by only one or two specimens and the examination of debris under the binocular microscope yielded several species in the form of minute portions of colonies. No doubt the bryozoan fauna of the waters about Cura\xc3\xa7ao includes several times as many species as appear in this report.\nIt is a typical collection of the tropical seas as far as it goes. Most of the species represented here are found in the Florida waters, where they have been recorded by SMITT (1872\xe2\x80\x9473) and OSBURN (1914). LEVINSEN (1909) has listed incidentally a few of the species for the region about the Virgin Islands (at that time the Danish West Indies). Otherwise, practically nothing is known of the Bryozoa in all that vast region which includes the West Indies, the Caribbean Sea and the Gulf of Mexico.

Description: Caracasbaai, 19. IV. 20, 6 spec.

Description: Die Poriferen-Ausbeute der Cura\xc3\xa7ao-Expedition Herrn Dr. C. J. VAN DER HORSTS verdient nach zweifacher Richtung besonderes Interesse. Einmal gew\xc3\xa4hrt sie in die Schwammfauna des s\xc3\xbcdlichen Teiles des Karaibischen Meeres Einblick, von der bisher erst sehr wenig bekannt ist. Seit der \xe2\x80\x9eArgo\xe2\x80\x9d- Expedition des Jahres 1876 ist die Spongien-Fauna dieses Gebietes nicht mehr untersucht worden. Ueber die Spongien von Cura\xc3\xa7ao lagen bisher in der Literatur \xc3\xbcberhaupt noch keine Angaben vor. Sodann liefern die Sammelergebnisse und Standorts-Aufzeichnungen Dr. VAN DER HORSTS Angaben \xc3\xbcber die \xc3\xb6kologischen Anspr\xc3\xbcche einer Reihe westindischer Schwammarten. Es ist kaum n\xc3\xb6tig zu bemerken, dass hier noch fast v\xc3\xb6llig Neuland vorliegt.\nDie Schwamm-Ausbeute, von der im folgenden das Ergebnis der Bearbeitung der Kalk- und Kieselschw\xc3\xa4mme (ausschliesslich der Hornschw\xc3\xa4mme) mitgeteilt werden soll, wurde von Herrn Dr. VAN DER HORST im April und Mai 1920 an der S\xc3\xbcdk\xc3\xbcste von Cura\xc3\xa7ao gesammelt. Es handelt sich um Litoralf\xc3\xa4nge, die im Wesentlichen in zwei \xc3\xb6kologisch sehr verschiedenartigen K\xc3\xbcstengebieten gemacht wurden: Der Caracas-Bai, einem Gebiet der offenen K\xc3\xbcste mit v\xc3\xb6llig klarem Wasser, teilweise der Brandung ausgesetzt, und \xe2\x80\x9eSpaansch Water\xe2\x80\x9d, einer Lagune, die mit dem offenen Meer nur durch einen schmalen Kanal (\xe2\x80\x9eSpaansche Haven\xe2\x80\x9d) in Verbindung steht, und deren Wasser regelm\xc3\xa4ssig starke Tr\xc3\xbcbungen zeigt. Einige wenige Spongien wurden auch aus dem eben erw\xc3\xa4hnten Meeresarm \xe2\x80\x9eSpaansche Haven\xe2\x80\x9d selbst mitgebracht.

Description: Spanish Bay, 11. V. 20, many spec.

Description: Ausser den von Dr. VAN DER HORST sind im Folgenden auch die von Ir. MOOLENGRAAFF bei Cura\xc3\xa7ao gesammelten Exemplare vermeldet. Sie sind resp. mit H und M bezeichnet.

Description: Boca labadera, 12. V. 20, 9 spec.; Spanish Bay, 11. V. 20, 10 spec.; Caracasbay, 3, 4 and 6. V. 20, 10 spec.