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Books about Mantius:
L'enzyme du docteur mantius by M. stewart Fred (1932)
Variations sur un air allemand de Mr Mantius ... Op. 1. [P. F.] by Henri Louis Stanislas Mortier De Fontaine (1845)
Wiki information Mantius:
In Greek mythology, Mantius was the son of Melampus and Iphianassa and the father of Cleitus, Polypheides and, in some versions, of Oicles.
Mantius is a spider genus of the Salticidae family. There is no recent information on any of the five described species from south east Asia. The genus is said to be close to Ptocasius.