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WoRMS taxon details
original description
Rafinesque, C.S. (1815). <i>Analyse de la nature ou Tableau de l'univers et des corps organisés</i>. Published by the author, Palermo. 224 pp. , available online at http://gallica.bnf.fr/ark:/12148/bpt6k98061z.r=rafinesque.langEN page(s): 145; note: as subfamily Volutidia [details] ![OpenAccess publication OpenAccess publication](https://www.marinespecies.org/aphia/images/open-access.svg)
basis of record
Bouchet P., Rocroi J.P., Hausdorf B., Kaim A., Kano Y., Nützel A., Parkhaev P., Schrödl M. & Strong E.E. (2017). Revised classification, nomenclator and typification of gastropod and monoplacophoran families. <em>Malacologia.</em> 61(1-2): 1-526. [details] Available for editors [request]
From editor or global species database
Diagnosis Head bilobed with triangular lobes posterior to the eyes. Siphonal appendages unequal with the left longer and flatter, right appendage occasionally absent. Tubular salivary gland of the anterior digestive system usually short and free from the racemose salivary gland. Pattern with spiral lines ending in black nodules on the outer lip. Horny operculum always present. [details]
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