We have identified CG31765 (now nimA) as a likely candidate for jaunty (j). Sequencing of CG31765 in flies jSF7 over a deletion of the region (Df(2L)fn7) shows a Cys -> Tyr mutation at 45 bp in exon 1 of CG31765. Also j676 (Bloomington stock #1025) and j63 (Bloomington stock #715) show an identical Trp -> STOP mutation at 105bp in exon 2 of CG31765. David Huen & John Roote University of Cambridge