Exclude one data series from scatter chart legend (but not from the chart)

Hi Everyone,

is there a way to exclude one data series from a scatter chart legend, but still have the data plotted on the chart? Specifically, the other four data series would have their colored markers and names appear in the legend, but this one data series, while plotted on the scatter chart, would not be included in the legend.

Is it possible? Is it easy?

Cheers,

Jay