The new method, known as Bruzek's method, is based on the evaluation of "five characters" for each os coxae. This method achieved a 98-percent success rate in identifying gender in European collections. The current study, which applied Bruzek's method to American subpopulations of Black and White individuals, did not achieve 98 percent, but it did produce a success rate comparable to traditional methods of determining sex from skeletal characteristics (90-96 percent). Bruzek's method, however, requires considerably more time than traditional methods. Thus, this new method would only be appropriate for American subsamples of Black and White individuals when fragmented remains make it the only feasible method. Interobserver error for overall sex determination under the Bruzek method was low. Researchers independently evaluated 876 left os coxae with the Bruzek method and a combination of traditional techniques. Summary statistics for sex classifications were calculated for the total sample and for a random sample of 400 individuals (100 White females, 100 Black females, 100 White males, and 100 Black males) from three collections. 4 tables, 8 figures, and 9 references