The following information accompanied stocks donated to the Bloomington Stock Center by Craig Montell, Johns Hopkins University. trp47 and trp74 are mutations isolated in the EMS screen described in Wang, T., Xu, H., Oberwinkler, J., Gu, Y., Hardie, R.C., Montell, C. (2005). Light activation, adaptation, and cell survival functions of the Na+/Ca2+ exchanger CalX. Neuron 45(3): 367--378, FBrf0184214.