1. INTRODUCTION

2. THE MASSIVE GALAXY SAMPLE AND AUXILIARY DATA
2.1. The MASSIVE Survey
2.2. Effective Radii Measurements
2.3. Spectral Measurements
2.4. The Archival Chandra X-ray Sample

3. CHANDRA X-RAY ANALYSIS

4. LINKING THE X-RAY AND OPTICAL PROPERTIES OF MASSIVE EARLY-TYPE GALAXIES
4.1. The LX,gas-LK relation
4.2. The LX,gas-σe relation
4.3. Tgas-σe: probing the relationship between gas temperature and gravitational potential
4.4. An empirical two-optical-parameter X-ray-optical relation

5. SUMMARY