tRNAscan-SE predicted 592 tRNAs and 194 pseudogenes within the C. elegans genome. After visual inspection, 13 borderline tRNAs (scoring between 20 and 30 bits) were judged to be likely pseudogenes. Thus, the revised tally is 579 tRNAs and 207 tRNA-like pseudogenes. tRNAscan-SE was also used in the analyses presented in the C. elegans genome publication [C. elegans Sequencing Consortium, 1998], which gives a different overall tRNA count. We believe that data was incorrectly reported due to simple error or changes in the final version of the sequence.