A DEEP MULTICOLOR SURVEY .3. ADDITIONAL SPECTROSCOPY AND IMPLICATIONSFOR THE NUMBER COUNTS OF FAINT QUASARS

We have made spectroscopic identifications of 39 additional quasar can didates from the Deep Multicolor Survey (DMS) of Hall et al. (1996, Ap J, 462, 614). We have identified 9 new quasars with 0.3<z<2.8 and 16.8 <B<21.6, all from the group of candidates with ultraviolet excess (UVX ). No new quasars with z >3 were found among the observed candidates s elected due to their red (B-R) and (V-R) colors. As a result, there ar e now 55 confirmed quasars in the survey: 42 with 0.3<z<2, nine with 2 <z<3, three with 3<z<4, and 1 at z=4.3. One new quasar, DMS 0059-0055, is very bright with B=16.8 and z=0.3, making its detection by our sur vey very unexpected. Including this new spectroscopy, the results of t he DMS are converging with the predicted space densities of other surv eys. In particular, we no longer find an excess of quasars with z<2.3 and B<21 in the survey over predictions based on models by Koo & Kron (1988, ApJ, 325, 92). Also, the excess in the number of quasars seen a t z>3 over predictions based on models by Warren et al. (1994, ApJ, 42 1, 412) is less than previously suggested. We also demonstrate the suc cess of our quasar color modeling which is important in assessing the completeness of our survey. (C) 1997 American Astronomical Society. [S 0004-6256(97)00212-4].