Subject: correction I would like to correct an error in the map position of the gene nervy, as described in a paper published in Genetics by my lab in 1995 (Feinstein, P., K. Kornfeld, D. Hogness, and R. S. Mann. (1995) Identification of Homeotic Target Genes in Drosophila melanogaster Including nervy, a Proto-Oncogene Homologue. Genetics 140, 573-586.). In that paper, nervy was mapped to 99F. However, we recently discovered that our original polytene in situ data mapped the gene to 60C. We believe that the 99F position was an error introduced during the writing of the paper. The 60C position for nervy was recently brought to my attention by Francois Karch, who was doing some sequencing in the 60C region, and has since been confirmed in my lab. We regret this error, and hope that Flybase will update its maps accordingly. Please don't hesitate to contact me if you need any clarification. For your information, I also notified the journal Genetics about this error, in case they would like to publish a correction. Sincerely, Richard S. Mann