THE ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 103:145-171, 1996 March THE PARKES-MIT-NRAO (PMN) SURVEYS. VIII. SOURCE CATALOG FOR THE ZENITH SURVEY (-37.0 deg < Dec. < -29.0 deg) ALAN E. WRIGHT Australia Telescope National Facility, CSIRO, P.O. Box 276, Parkes, NSW 2870, Australia MARK R. GRIFFITH Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139 ANDREW J. HUNT Australia Telescope National Facility, CSIRO, P.O. Box 276, Parkes, NSW 2870, Australia EUAN TROUP Australia Telescope National Facility, CSIRO, P.O. Box 276, Parkes, NSW 2870, Australia B. F. BURKE Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139 AND R. D. EKERS Australia Telescope National Facility, CSIRO, P.O. Box 276, Parkes, NSW 2870, Australia ABSTRACT We present a catalog of radio sources discovered at a frequency of 4850 MHz in the zenith zone (-37 deg < Dec. < -29 deg) of the Parkes-MIT-NRAO (PMN) surveys. The zenith survey covers 0.677 sr and contains 2400 sources to a flux limit of 72 mJy. The survey was made using the Parkes 64 m radio telescope with the NRAO multibeam receiver during 1990. The data-taking and principal reduction methods used for the PMN surveys have been extensively described in previous papers. In this paper, we describe the specific details of the zenith survey and we provide a list of sources. Later papers in the series will describe the images made from, and provide analysis of, the data. Subject headings: radio continuum: general -- surveys