The following information accompanied stocks donated to the Stock Center (2/00) by Jan Eeken, Leiden University. 1. v54k This v allele is present on a rud1 v54k tc1 sl2 smd1 chromosome. 2. Df(1)BA2-8 This Df for 4F5;5A13 was isolated on a Basc chromosome after X-irradiating males on the basis of its failure to complement cx1. 3. Df(1)M38-C5 and yM38-C5 This Df for 8B;8E was isolated after X-irradiating spermatids in wild type males. It was isolated along with a new y2-like mutation, yM38-C5. 4. Df(1)vN124B This Df or 9E3-F3;10A1-8 originally came from Abe Schalet and was likely induced by neutron irradiation.