The following information accompanied stocks donated to the Bloomington Drosophila Stock Center by Alisa Katzen, University of Illinois College of Medicine. P{E(spl)mbeta-HLH-CD2.dC}T6 is a homozygous viable and fertile insertion on the third chromosome. P{Ddc.E(spl)m8-HLH-lacZ.Gbe}3 is a homozygous viable and fertile insertion on the third chromosome.