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Haplobranchus aestuarinus Bourne : een sedentaire Annelide uit het brakke water van Nederland

On a plus écrit peut-être sur l'histoire du développement de l'huître que sur celle d'aucun autre animal invertébré.. II faut sans doute chercher la cause de ce fait dans cette particularité que l'huître fut, dès les temps les plus anciens, un des mets les plus recherchés, et que l'attention fut ainsi attirée sur le développement de cet animal.

Tipo: Text

Ano: 1884

URL: http://archimer.ifremer.fr/doc/00034/14486/11787.pdf

Deze worm, het eerst waargenomen in den mond van de Thames, de Liffey en andere rivieren in Engeland, werd door dr. G. Romijn op verschillende plaatsen in N. Holland verzameld: in het Noordhollandsch kanaal bij Schoorldam en in kanaal P. (een verbindingskanaal tusschen het Noordzee-kanaal en de Haarlemmer ringvaart). Terwijl de exemplaren van Engeland 4 à 6 mm. lang worden, bereiken de onze slechts een lengte van 2 mm. Het zijn primitieve Sabelliden (Fam. Amphicorinidae) met 5 onvertakte kieuwen aan weerszijde, waarvan alleen de middelste een bloedvat vertoonen. Zij bestaan uit 12 segmenten: 1 borstelloos kopsegment met een paar oogen, 8 thoracaal segmenten en 3 abdominaal segmenten. De haakvormige borstels van thoracaal en abdominaal segmenten verschillen...

Catalogue systématique des mollusques (gastropodes prosobranches et polyplacophores)

Palavras-chave: 42.76.

Ano: 1921

URL: http://www.repository.naturalis.nl/record/319317

Horst, R.; Schepman, M.M..

La collection conchyliologique du Musée d’Histoire Naturelle des Pays-Bas est d’origine très hétérogène. Au premier lieu elle dérive du Cabinet de Zoologie, d’Anatomie Comparée et de Minéralogie de l’Université de Leide, qui surtout sous la direction du professeur Brugmans (1786—1819) s’était énormément développé¹). Une autre collection d’objets d’histoire naturelle, sous le nom de „’s Lands Cabinet” était conservée au Trippenhuis à Amsterdam. Ces collections, combinées avec le Cabinet du Prince Guillaume V et la riche collection d’Oiseaux de C. J. Temminck, forment le noyau du „Ryks Museum van Natuurlijke Historie”, institué par décret royal du 9e Août 1820. En 1822 le Musée s’enrichissait des collections, formées par le Professeur C. G. C. Reinwardt 2)...

On a species of Lycastis and three aberrant forms of Nereidae from the Dutch East Indies

Ano: 1908

URL: http://www.repository.naturalis.nl/record/508285

Lycastis meraukensis n. sp. Dr. J. W. R. Koch, member of the New-Guinea expedition of the Kon. Nederl. Aardrijkskundig Genootschap in 1904, found at Merauke in decayed wood of the Sago-palm 9 specimens of this worm, viz. 2 large ones, one of which is incomplete and 7 smaller ones. Unfortunately it is not mentioned whether the tree was met with in fresh or brackish water of the river or in salt water at the sea-shore. The dorsal side of some of the worms is dark flesh-coloured, whereas a red brown ring occurs around the anal segment. The largest specimen measures about 150 mm. in length and has a breadth of 7 mm. in the median body-region (without the parapodia); the number of its segments amounts to 170. One of the smaller specimens has a length of 60 mm....

Contributions towards the knowledge of the Annelida Polychaeta

Palavras-chave: 42.76.

Ano: 1918

URL: http://www.repository.naturalis.nl/record/319388

The publication of the »Reports on the Scientific Results of the voyage of H. M. S. Challenger” undoubtedly will mark an era in the history of our knowledge of the Invertebrate Animals. Never before in any voyage such a bulk of wellpreserved material was collected and afterwards worked out by so many distinguished investigators. In the first place this can be stated about the Annelida Polychaeta, a group usually quite neglected in preceding voyages. Though in the last decennium the number of known species much increased owing to the careful investigations of Grube 1), Marenzeller 2), Hansen 3), Langerhans 4), Théel 5), a. o., by the Report of Mr. M’Intosh on the Challenger-Annelida, lately published, our systematical knowledge of this group is largely...

Descriptions of Earthworms

Ano: 1886

URL: http://www.repository.naturalis.nl/record/509354

Among the worms of our collections I met with two specimens of the genus Eudrilus, kindly presented to our Museum by Mr. C. J. Heering from Surinam. The genus Eudrilus was named by Perrier 2), who described three species: E. Lacazii (from Martinique), E. decipiens (from the Antilles) and E. peregrinus (from Rio Janeiro). Last year Mr. Beddard received from New Caledonia a dozen of earthworms, belonging to the same genus, which he named E. Boyeri 3). The genus Eudrilus, though agreeing in many characters, viz.: the arrangement of the bristles, the presence of a muscular gizzard, the form of the vascular system, with Lumbricus, is distinguished from it by the remarkable structure of its genital organs. Beddard published a careful account of the anatomy of...

On a remarkable heteronereis from the Northcoast of East-Java

Ano: 1887

URL: http://www.repository.naturalis.nl/record/508423

During a night in August 1910 Mr. P. Buitendijk catched on the road of Panaroekan, with the pelagic net, a curious Heteronereis-specimen, differing from the species usually met with by the shape of its cephalic lobe, but agreeing in many regards with a similar form from the Gulf of California, collected in 1900 by Diguet and afterwards described by Gravier ¹). Our worm (a ♂) is rather small, measuring only 13 mm. in length, whereas the largest of the California-specimens reaches 23 mm.; the number of its segments amounts to 95. The body shows dorsally on each side a double row of black spots, consisting of a narrow transverse one at the base of each foot and another round patch on the middle of it; veutrally also there occurs a dark spot at the base of...

On a specimen of Lumbricus terrestris, L. with bifurcated tail

Ano: 1911

URL: http://www.repository.naturalis.nl/record/509105

In the last number of the »Annals and Magazine of Nat. History” (Dec. 1885), I find a notice of Prof. Jeffrey Bell about two Lumbrici with bifid hinder ends, one specimen belonging to L. terrestris, the other to L. foetidus; moreover he mentions a specimen, presenting a similar remarquable arrangement, in the University Museum at Oxford. The occurrence appearing to be rather rare, I may describe here another two-tailed specimen of Lumbricus terrestris received by me from a fisherman about a year ago. The worm bad a length of about 90—100 m. m., while the tails measured about 25 m. m.; the right one however was a little shorter than the left. The structure of the tails appeared quite normal. The dorsal vessel, shining through the skin, was seen dividing...

Descriptions of Earthworms

Ano: 1886

URL: http://www.repository.naturalis.nl/record/508845

During his last journey in Liberia, my colleague Mr. Büttiköfer had the opportunity to collect a number of earthworms under a mouldering palm-tree. Among them I met with some specimens of Ac. Büttikoferi, a species which I briefly described in this Journal, Vol. VI, p. 105. However this description being based upon the examination of a single very badly preserved individual, I wish to give in the following note some illustrations and a more full account of the distinguishing characters of this species. The number of described species of Lumbricidae from all parts of the world is increasing daily, and it is a wellknown fact to every-one, dealing with this matter, that it is hardly possible to determine the systematic position of earthworms only by their...

Een Heteronereis-vorm van Nereis succinea Leuck

Ano: 1887

URL: http://www.repository.naturalis.nl/record/509146

Te midden van een tiental exemplaren van Nereis succinea Leuck., door dr. Redeke gedregd in de Zuiderzee, boven Enkhuizen, 15 Juni 1921, trof ik een geslachtsrijp ♂ aan, in heteronereis-toestand. Het exemplaar heeft een lengte van circa 30 mm., maar is niet geheel compleet. De oogen zijn vergroot en de bewapening van de slurp is normaal; alleen ontbreken de paragnathen van groep V. Slechts de voetjes van het middengedeelte van het lichaam vertoonen een epitoke wijziging. Deze begint met het 15e parapodium en strekt zich uit tot het 52e segment; de achterste parapodia stemmen geheel overeen met die van den atoken vorm (loc. cit. p. 146, fig. 3). Zooals gewoonlijk is de dorsale cirrus van de voorste 7 segmenten aan de basis aangezwollen. Bij het epitoke...

On new and little-known Frogs from the Malayan Archipelago

Palavras-chave: 42.76.

Ano: 1922

URL: http://www.repository.naturalis.nl/record/319333

Being occupied with an examination of the frogs from the Malayan Archipelago in our Collections, the type-specimens of Bufo cruentatus (Schleg.) Tschudi and Hylaplesia borbonica Kuhl & v. Hass. came under my hand, and I was not a little surprised to see that the later authors believe those two species to be identical. Our specimens of B. cruentatus quite agree with the description given by Duméril and Bibron, but those of B. borbonicus (Peters has first pointed out that Hylaplesia is a true Bufonid) differ by so striking characters, that this species is recognised at first sight and the confusion of both species must certainly be imputed to the incomplete description of Boie and to the rarity of the specimens. However it is very strange that Peters,...

On a gigantic Nereis (Ner. ijimai Iz.) from Japan

Ano: 1883

URL: http://www.repository.naturalis.nl/record/508909

Among the Polychaeta of the Leyden Museum I met with a large Nereis-specimen, presumably collected in Japan, that in the structure of its parapodia so much agrees with Ner. ijimai1) described by Izuka from that country, that in my opinion it must be identified with this species, though there are some discrepancies in the armature of the proboscis. Nereis ijimai, like as Ner. oxypoda Marenz, Ner. virens Sars a. o. are characterized by the presence of a large, foliaceous dorsal ligula at the parapodia of the median body region and were ranged by Kinberg in his genus Alitta2). Unfortunately Izuka had only a single female specimen at his disposal, that was sexually mature and showed some epitocous transformation after the 40th parapodium by the presence of...

A contribution to our knowlegde of the Sigalioninae

Palavras-chave: 42.76.

Ano: 1918

URL: http://www.repository.naturalis.nl/record/318381

Though our knowledge of the Sigalioninae much increased in the last years thanks to the assiduous investigations of Mc Intosh, Pruvot et Racovitza 1), Darboux, Willey a. o., yet there still reigns a good deal of confusion about the exact diagnosis of the genera. Sthenelais simplex Ehl. 2) f. i. has rightly been ranged by Augener among the genus Leanira 3); Leanira Giardi Darb.4) according to the investigations of Marenzeller belongs to Sthenelais 5) and Thalenessa stylolepis Willey 6) will prove, as I presume, to be a species of Sigalion. Partly this may be ascribed to the circumstance, that only a few of the investigators could dispose of a large material and therefore must borrow their knowledge from the often inadequate descriptions of others; but it...

Contributions towards the knowledge of the Annelida Polychaeta

Palavras-chave: 42.76.

Ano: 1916

URL: http://www.repository.naturalis.nl/record/319324

The sub-genus Perinereis, according to Grube’s views, contains all Nereis-species, characterized by having the lateral dorsal paragnathi of the basal ring of the proboscis (group VI) all or some of them transverse, ridge-shaped, the remaining paragnathi being conical, or pin-shaped (»pectiniformes” Kinberg), or compressed; the feet all of the same structure, or those of the posterior region of the body more enlarged. This division mainly corresponds to Kinberg’s family Aretidea, and not to his genus Perinereis, containing the species, which have no pectiniform teeth and but little modified posterior feet. However it seems preferable to me to maintain Kinberg’s name, as I do not like to increase the systematical literature with a new one, and because the...

On the synonymy of Pherecardia lobata Horst

Ano: 1889

URL: http://www.repository.naturalis.nl/record/509452

In my paper »Contributions towards the knowledge of the Annelida polychaeta, I: Amphinomidae” 1) I was the first to describe the genus Pherecardia, characterized by having a caruncle, composed of a median heart-shaped axis, that bears on each side several (7) folded lobes of a lamelliform shape and directed backward. A tuft of short cylindrical branchial filaments occurs on each body-ring and the bristles of the ventral fascicles are not bifurcated, but provided with a hooklike bend tip, whereas the dorsal ones are partly capillary, partly stout, with serrations, having the shape of an Y. It was based on a badly preserved specimen, of which the locality was unknown, but in 1902 Collin mentioned it in his »Verzeichniss der von Prof. Semon bei Amboina und...

On two new species of the genus Acanthodrilus, Perr. from Liberia

Ano: 1911

URL: http://www.repository.naturalis.nl/record/508798

Among the Invertebrates collected by Büttikofer and the late Sala during their journey in Liberia 2), I found two large earthworms, belonging to the genus Acanthodrilus). Though the specimens are not very well preserved, I will describe them as good as possible, our knowledge of this interesting genus of Lumbricidae being rather scanty and only based upon the examination of four species: A. obtusus Perr. and A. ungulatus Perr. from New-Caledonia, A. verticillatus Perr. from Madagascar 4) and A. kerguelenensis R. Lank. from Kerguelen Island 5).

Polychaete Anneliden verzameld door Het Rijksinstituut voor Biologisch Visscherijonderzoek

Ano: 1884

URL: http://www.repository.naturalis.nl/record/509164

Lepidonotus squamatus L. juv. Waarn. 134. Enkhuizerzand. 7 Febr. 1909. Zooals vroeger door mij aangetoond, is deze soort vrij gemeen in de Zuiderzee. Eunoa nodosa M. Sars. Waarn. 16. 55° 40' N.Br., 0° 50' W.L. 8 Maart 1914. Harmothoë (Evarne) impar (Johnst.). Waarn. 69. Molengat. 16 Oct. 1913. De schubben stemmen geheel overeen met de beschrijving en afbeelding door Mc Intosh gegeven (British Annelids, p. 353, pi. XXXII, fig. 18). Nereis virens M. Sars. Waarn. 7. Vangdam. 30 Juli 1915. Slechts het vooreinde van het lichaam, uit elf segmenten bestaande, is aanwezig. ? Nereis pelagica L. Waarn. 11. St.. Abb's Head. 55° 56', 2° 3'. 11 Maart 1914. Nereis diversicolor O. F. Müll. Zuidwal in de modder, Helder. Septb. 1899. Nereis dumerilii Aud. & Edw. juv....

Three overlooked Chrysopetalidae

Palavras-chave: 42.76.

Ano: 1920

URL: http://www.repository.naturalis.nl/record/318404

In my paper „0n a Bhawania-specimen, a contribution to our knowledge of tbe Chrysopetalidae” (Notes from the Leyden Museum, Vol. XXX, p. 219, pl. 9) to my great regret I omitted to mention Bhawania Goodei, described by Webster in his „Annelida from Bermuda” (Bulletin of of the United States National Museum, N°. 25, 1884, p. 307). Like as with our specimen, unfortunately no good view of the head was obtained; also the different structure of the upper- and underside of the paleae has not been recognized by Webster. I overlooked also two other species, described by Johnson in his „Preliminary account of the marine Annelids of the Pacific Coast” (Proceed. California Acad, of Sciences, (3) Vol. I, 1897, p. 153), Chrysopetalum occidentale and Heteropale bellis....

Three New Nereis-species from the Dutch East-Indies

Ano: 1909

URL: http://www.repository.naturalis.nl/record/508424

Nereis buitendijki n. sp. Malacca-strait. P. Buitendijk, 1910. Amidst the Plankton of Malacca-strait Mr. P. Buitendijk met with a small Nereis-specimen, characterized by the presence of a digitiform appendage on the dorsum of the parapodia in the posterior body-region. The worm measures about 14 mm. in length. The head is longer than broad, trapezoidal, provided with large, broad palps and two short antennae, measuring about a third of the length of the head. The tentacular cirri are rather short, the longest of them reaching about to the 6th segment. The armature of the proboscis consists of: I = 2 paragnaths, one behind the other. II = an oblique, distichous group of 10 paragnaths. IV = a transverse, tristichous group of 10 to 12 paragnaths. III = 3...

Descriptions of Earthworms

Palavras-chave: 42.76.

Ano: 1919

URL: http://www.repository.naturalis.nl/record/319281

Among the specimens of Ac. Büttikoferi from Liberia, described in my foregoing paper ¹), I found a number of smaller Acanthodrilidae, which at first I believed to be young individuals of the same species. However examining them more accurately, I recognized that they present some characters, which hitherto are not observed in any other species of the genus Acanthodrilus, and I have no doubt, that they belong to a new species. In honour of the Naturalist, who had done so much to increase our knowledge of the tropical Earthworms, I will name it Ac. Beddardi. The length of the largest individual is about 160 m.m. The cephalic lobe is rather long, compared to that of Ac. Büttikoferi and the setae are more projecting than in this species. The setae are arranged...