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| Gravier-Bonnet, N.. |
| The present collection was made on the south and west coasts of Madagascar between 90 en 465 meters depth and includes 17 species of calyptoblastic hydroids, belonging to six families: Campanulinidae, Lafoeidae, Campanulariidae, Syntheciidae, Sertulariidae and Plumulariidae. Twelve are recorded for the first time from Madagascar, while three of these are new for the Indian Ocean and one is described as new (Tulpa costata). Endemic species represent half of the collection and are numerically more important than cosmopolitan, tropical-indopacific, and southern species. A comparative study of bathymetrical characteristics of species from Madagascar and around the world allows to distinguish three groups of species: deepsea species, which have a very wide... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Coelenterata; Hydrozoa; Madagascar; New species; Revision; Halicornaria ferlusi Billard; Temporary epizoism; 42.72. |
| Ano: 1979 |
URL: http://www.repository.naturalis.nl/record/323945 |
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| Gravier-Bonnet, N.. |
| Gattya wimleni spec. nov. is referred to the family Halopterididae (Hydroida, Thecatae). Colonies were collected at Tuléar (SW Madagascar, Indian Ocean) on the deeper part of the lower sloping platform, at 35 to 45 metres depth on the outer slope of the great barrier reef. The specimens were studied in transmitted light and by SEM. They differed from the eight species of Gattya already known in having a hydrothecal margin provided with four large rounded teeth of equal size - one abcauline, one adcauline and two lateral, curving inwards over the aperture, the laterals being hidden behind the lateral nematothecae in profile view. Its closest affinities are with the species G. multithecata (Jarvis, 1922) and G. aglaopheniaformis (Mulder & Trebilcock,... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cnidaria; Hydrozoa; Thecatae; Halopterididae; Gattya; Taxonomy; Morphology; Nemato- theca; SEM; Indian Ocean.; 42.72. |
| Ano: 1998 |
URL: http://www.repository.naturalis.nl/record/317615 |
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