Willan r c (39 risultati)

The aeolid nudibranch Godiva quadricolor (Barnard, 1927), previously recorded as introduced into southern Western Australia (i.e., the Fremantle-Cockburn Sound area) and now probably naturalised there, is herein recorded from southern Queensland (i.e., Pumicestone Passage, immediately north of the Port of Brisbane), where a bree…

Further review of the literature reveals that type designations earlier than, or different from, those proposed by Valdes (2001) are available for Umbraculum Schumacher, 1817, and three of its synonyms: Umbrella Lamarck, 1819, Gastroplax Blainville, 1819, and Ombrella Ferussac, 1822. The type species of Umbraculum is U. chinense…

Thecacera boyla n. sp is described from coastal northern Queensland. Its most striking character is the elaboration of the rhinophoral sheaths into long, mobile "tentacles" that serve as sensory appendages, apparently in lieu of velar papillae. The genus Thecacera is holophyletic and probably derived from Polycera like polycerid…

As the Latin word urceus is a simple noun in apposition, the original spelling of the specific epithet derived directly from it must be retained (as urceus) in the future, regardless of the gender of the genus with which it is combined (International Code of Zoological Nomenclature 1999, Article 31.2.1). The name microurceus is…

Calliostoma bellatrix n. sp. is described from depths of 250 to 400 metres depth in the seaway between northern Australia and the southern Indonesian archipelago, and extending into the eastern Indian Ocean. Its smooth shell, with flat sides to the whorls and an acutely angled periphery ornamented with a "double" nodulose keel,…