Herculis
Herculis is a Latin form of hercules, meaning “Hercules, son of Jupiter and Alcmena; (hercle, mehercule) by Hercules!, indeed!”. It is the genitive singular masculine noun.
Found 132 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Civili 2.18: … facerent imperavit, complures praeterea Hispali faciendas curavit. Pecuniam omnem omniaque ornamenta ex fano Herculis in oppidum Gades contulit; eo sex cohortes praesidii causa ex provincia misit Gaiumque Gallonium, equitem Rom …
All forms of hercules (declension table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Lewis & Short, A Latin Dictionary (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.