Completion of the SUPERBLINK proper motion survey in the southern celestial hemisphere has turned up 170 new stars with proper motion 0.45 \arcsec yr ^ { -1 } < \mu < 2.0 \arcsec yr ^ { -1 } .
This fourth and final installment completes the all-sky , data mining of the Digitized Sky Surveys for stars with large proper motions .
The areas investigated in this final installment comprise 11,600 square degrees in the declination range -30 ^ { \circ } < Decl . < 0 ^ { \circ } and in low Galactic latitude areas south of Decl . = -30 ^ { \circ } which had not been covered in earlier data releases .
Astrometric and photometric data are provided for the 170 new stars , along with finder charts .
Most of the new discoveries are found in densely populated fields along the Milky Way , toward the Galactic bulge/center .
The list of new discoveries includes four stars with proper motion \mu > 1.0 \arcsec yr ^ { -1 } .
The total list of high proper motion stars recovered by SUPERBLINK in the southern sky now includes 2228 stars with proper motions 0.45 \arcsec yr ^ { -1 } < \mu < 2.0 \arcsec yr ^ { -1 } .