n African Invertebrates - Review of from the Atlantic, with description of a new species from Brazil (Neogastropoda, Melongenidae)

Volume 56, Issue 3
  • ISSN : 1681-5556
  • E-ISSN: 2305-2562


The anatomy of Brazilian and African specimens of , a supposedly amphi-Atlantic species, is described in detail in this paper. Two different entities are recognised. The first is the true , which is now restricted to the western African coast, from Senegal to Congo. The remaining species is sp. n., described herein as the single Brazilian melongenid species known so far, distributed from the Caribbean to Brazil (Parà to Santa Catarina states). The two species showed important anatomical discrepancies, and differ in the position of the tentacles, size of the neck, diameters of the aortas, diameter of the posterior oesophagus, and other features described below. A bursa copulatrix and rachidian teeth bearing a central cusp are both exclusive to .

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