The remarkable nymphs of Baetisca rogersi were first found in the streams of northwest Florida in April, 1938. Several other nymphs were collected in June and November, but it was not until March of the following year that I was successful in securing adults. The nymphs are very hardy; those collected March 17 withstood an automobile trip of nearly three hundred miles and confinement in a small jar for almost three days with only a few casualties. In the laboratory at Gainesville, one male and two female imagoes were reared from the survivors.