Lessona studied medicine in Turin, afterwards relocating to Egypt, where he worked in a hospital outside of Cairo as hospital director at Karnak.[1] From 1850 he studied natural sciences at Turin, and in the meantime found employment as a secondary school teacher. In 1854 he attained the chair of mineralogy and zoology at the University of Genoa.
In 1862, with Filippo de Filippi, he took part in a scientific and diplomatic mission to Persia, and after his return to Italy, he was named chair of zoology at the University of Bologna in 1863.[1] In 1867 he became chair of zoology and comparative anatomy at the University of Turin.[2] He was the first to translate Darwin's The Descent of Man into Italian, in 1871.[3] He was also a Senator of the Kingdom from 1877 to 1894.[1]
^Beolens, Bo; Watkins, Michael; Grayson, Michael (2013). The Eponym Dictionary of Amphibians. Exeter, England: Pelagic Publishing Ltd. xiii + 262 pp. ISBN978-1-907807-41-1. ("Lessona", p. 124).
^ abBeolens B, Watkins M, Grayson M (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN978-1-4214-0135-5. ("Lessona", p. 156).