series.js

      var server = new mongodb.Server('localhost', 27017, {auto_reconnect: true, safe: true});
      var db = new mongodb.Db('scjs', server);

      db.open(function(err, db) { if(err) throw err;

          async.eachSeries(

              // Collection
                mongo_provinces

              // Iterator
              , function(province, done){
                  db.collection('provinces').insert(province, function(err, result) { if(err) throw err;
                      console.log(result);
                      done();
                  });
              }

              // Callback when the iteration is finished
              , function(err){ if(err) throw err;
                  process.exit();
              }
          );

      });