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 Hirudo medicinalis [ spec. nov. ] H. depressa fusca: lineis flavis dorsalibus sex: intermediis immaculatis, subtus cinerea nigro maculata. Bergm. act. Stockh. 1757. n. 4. f. 1, 2. Raj. ins. 3. Hirudo medicinalis. Habitat in Aquis dulcibus. Venae sector, imprimis Haemorrhoidum.