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This study treats three genera of West-Indian shallow water Tethyidae (Porifera Demospongiae). The poorly known genus Columnitis Schmidt 1870 has been redescribed by re-examination of its type species C. squamata and the description of a new species C. anomala.
This genus is characterized by a skeleton made from parallel bundles of subtylostyles crossed in the inner part by a layer of thinner subtylostyles and by three kinds of asters. A new genus, Nucleotethya, and a new species, N. bifida have been erected to harbor specimens bearing
a large spicular core. The knowledge of the genus Tectitethya Sarà 1994 has been increased by the description of three new species, T. keyensis, T. macrostella and T. raphyroides.
The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.