Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis Author Linnaeus, Carolus text 1758 Laurentius Salvius Stockholm https://archive.org/download/mobot31753000798865/mobot31753000798865.pdf book 2C6327E1-5560-4DB4-B9CA-76A0FA03D975 https://doi.org/10.5962/bhl.title.542 3922206 Medusa velella [ spec. nov. ] M. ovalis concentrice striata, margine cisiato, supra velo membranaceo. Col. ecphr. 20. t. 22, Urtica marina soluta. Habitat in Pelago. Loefling. In Mari Mediterraneo. Brander. Ovalis centro prominulo, lineis concentricis, margine ciliato ; supra linea oblique transversali ; supra etiam membrana, dorsalem secans lineam inferiorem, rigidula, latitudine corporis.