Cecropius
Could not find Cecropii in Logeion dictionaries.
Cecropii proper-name adjective masculine vocative plural, proper-name adjective neuter genitive singular, proper-name adjective masculine nominative plural, proper-name adjective masculine genitive singular of Cecropius
Cecrŏpĭus, (12) a, um, dʼAthènes ou de lʼAttique : apes Cecropiæ Virg. G. 4, 177, les abeilles de lʼHymette.