Developmental Biology. In the article “Differential rescue of visceral and cardiac defects in Drosophila by vertebrate tinman-related genes” by Maijon Park, Carol Lewis, David Turbay, Amy Chung, Jau-Nian Chen, Sylvia Evans, Roger E. Breitbart, Mark C. Fishman, Seigo Izumo, and Rolf Bodmer, which appeared in number 16, August 4, 1998, of Proc. Natl. Acad. Sci. USA (95, 9366–9371), the authors request that the following corrections be noted. In the author line, the first and fourth authors’ names should read Maiyon Park and Audrey Chung, and Dr. C. Goridis should be deleted from the reprint request footnote.