Atlanticus
Could not find Atlantica in Logeion dictionaries.
Atlantica 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: feminine vocative singular, Proper-name adjective: neuter accusative plural of Atlanticus
Atlantĭcus, (16) v. Atlantiacus.