Tommaso di Maria Allery, marchese di Monterosato (Palermo, 27 June 1841 – Palermo, 1 March 1927) was an Italian malacologist.
He was born in Palermo, Italy, in 1841 and died there in 1927. He became a distinguished scholar of the Mollusca in the Mediterranean, appreciated by students of malacology from around the world.
Given his reluctance to field research, he collected a considerable amount of specimens to be studied in collaboration with other scholars. During his many travels in Italy and abroad, he kept many contacts with famous malacologists.
His scientific production was of considerable importance. He described many new species, enumerated the Mediterranean shells and studied the fossil deposits of Mount Pellegrino. According to the World Register of Marine Species (WoRMS) he has named 345 marine species, many of which have become synonyms
The following marine species were named after Monterosato, many of which have become synonyms
Acicularia monterosatoi De Boury MS, Monterosato, 1890 : synonym of Melanella pyramidalis (Sowerby, 1866)
Acteon monterosatoi Dautzenberg, 1889
Buccinum monterosatoi Locard, 1886 : synonym of Buccinum humphreysianum Bennet, 1824
Cadulus monterosatoi Locard, 1897
Coralliophila monterosatoi (Locard, 1897)
Daronia monterosatoi van Aartsen & Bogi, 1986 : synonym of Rugulina monterosatoi (van Aartsen & Bogi, 1986)
Granigyra monterosatoi (van Aartsen & Bogi, 1986): synonym of Rugulina monterosatoi (van Aartsen & Bogi, 1986)
Lepidochitona monterosatoi Kaas & Van Belle, 1981
Melanella monterosatoi (Monterosato, 1890): synonym of Melanella pyramidalis (Sowerby, 1866)
Octopus monterosatoi Fra Piero, 1895
Philine monterosatoi (Sykes, 1905)
Pleurotoma monterosatoi Locard, 1897: synonym of Spirotropis monterosatoi (Locard, 1897)
Polygireulima monterosatoi : synonym of Melanella monterosatoi (Monterosato, 1890) : synonym of Melanella pyramidalis (Sowerby, 1866)
Roxania monterosatoi Dautzenberg & H. Fischer, 1896
Rugulina monterosatoi (van Aartsen & Bogi, 1986)
Scala monterosatoi de Boury, 1890 : synonym of Cylindriscala acus (Watson, 1883)
Spirotropis monterosatoi (Locard, 1897)
Turritella monterosatoi Kobelt, 1887: synonym of Turritella turbona Monterosato, 1877
Others were given names with epithets based on his name Allery
Chrysallida alleryi (Kobelt, 1903): synonym of Chrysallida monterosatii (Clessin, 1900)
Evalea alleryi F. Nordsieck, 1972: synonym of Ondina scandens (Monterosato, 1884)
Rissoa alleryi (Nordsieck, 1972)
Solatisonax alleryi (Seguenza G., 1876)
