 Introduction: The Evolution of Morphology, Performance, and Fitness11 July 2003 Introduction: The Evolution of Morphology, Performance, and FitnessJoel G. Kingsolver, Raymond B. HueyJoel G. Kingsolver,1, Raymond B. Huey22bDepartment of Biology, Box 381800, University of Washington, Seattle, Washington 98195-1800Corresponding author; Integrative and Comparative Biology, 433:361-366 2003. Joel G. Kingsolver and Raymond B. Huey Introduction: The Evolution of Morphology, Performance, and Fitness, Integrative and Comparative Biology 433, 361-366, 1 July 2003. Joel G. Kingsolver, Raymond B. Huey Introduction: The Evolution of Morphology, Performance, and Fitness, Integrative and Comparative Biology, 433, 361-366, 1 July 2003 