Dear Colleagues- The MACHO project has detected a candidate microlensing event in progress towards the Galactic bulge. Event 99-BLG-38 Star ID 125.23850.4190 RA (J2000) 18:11:58.9 DEC (J2000) -30:43:54 V ~20.7 R ~19.9 A_red ~2.1, A_blue ~3.1 and possibly falling on 19 Jun, strong blend in Red (f ~0.5), duration 15 +/- 2 days. Finding charts and lightcurves are available on the web page at http://darkstar.astro.washington.edu or ftp site darkstar.astro.washington.edu directories macho/Alert/99-*. If you wish to no longer receive these bulletins please notify us at macho@astro.washington.edu.