1. INTRODUCTION

2. GALAXY SAMPLE

3. S4G MORPHOLOGY
3.1. Classification System
3.2. Application to the Full S4G Sample
3.3. Comparison of Classifications
3.4. The Distribution of Mid-IR Galaxy Types
3.5. The Distribution of Mid-IR Families
3.6. Inner and Outer Varieties

4. MID-IR MORPHOLOGY
4.1. Mid-IR CVRHS Sequence
4.2. SO+ Galaxies: Diversity at a Single Stage
4.3. The Mid-IR Morphology of Bars
4.4. The Mid-IR Morphology of Galactic Disks
4.5. Late-type and Spheroidal Galaxies
4.6. The Mid-IR Morphology of Spiral Arms
4.7. Recognizing edge-on Magellanic Barred Spirals and the Special Case of NGC 4631

5. SUMMARY