Cythereus
Could not find Cytherea in Logeion dictionaries.
Cytherea Proper-name adjective: neuter nominative plural, Proper-name adjective: neuter vocative plural, Proper-name adjective: feminine nominative singular, Proper-name adjective: feminine ablative singular, Proper-name adjective: neuter accusative plural, Proper-name adjective: feminine vocative singular of Cythereus
Cytherēus, a, um: adj. (Cythēra), Cytherean; subst., Cytherēa, ae, f., the Cytherean goddess; Venus, 1.257.