The publisher regrets that several corrections requested by the author were not made. In Table 1 on page 169, the first data entry under theheading Positional cue and cue interpretation mutantsshould read
efn-2(
ev658);
efn-3(
ev696). The seventh dataentry under the heading Positional cue and cue interpretationmutants should read
smp-1(
ev715)
smp-2(
ev709). For thereaders convenience, the corrected Table 1 appears here.On page 170 at the bottom of the left column
mnm-5should be italicized.On page 170 in the right column, line 5 of the secondparagraph, etIs2 should be italicized.